remove some fastfox prefs

add missing pref
browser.startup.homepage_override.mstone
2026-06-12 15:40:48 +05:30 · 2026-02-28 16:59:58 -05:00 · 2025-12-18 15:32:08 -05:00 · 2025-09-18 11:13:03 -04:00 · 2025-09-18 11:07:03 -04:00 · 2025-09-18 11:06:44 -04:00
13 changed files with 684 additions and 972 deletions
@@ -1 +0,0 @@
-* text=auto
@@ -3,7 +3,7 @@
 * Fastfox                                                                              *
 * "Non ducor duco"                                                                     *
 * priority: speedy browsing                                                            *
- * version: 152                                                                         *
+ * version: 137                                                                         *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/

@@ -22,12 +22,6 @@
 //user_pref("nglayout.initialpaint.delay", 5); // DEFAULT; formerly 250
    //user_pref("nglayout.initialpaint.delay_in_oopif", 5); // DEFAULT

-// PREF: Font rendering cache in Skia (32MB)
-// Increases font cache size to improve performance on text-heavy websites.
-// Especially beneficial for sites with many font faces or complex typography.
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1239151#c2
-user_pref("gfx.content.skia-font-cache-size", 20); // 20 MB; default=5; Chrome=20
-
 // PREF: page reflow timer
 // Rather than wait until a page has completely downloaded to display it to the user,
 // web browsers will periodically render what has been received to that point.
@@ -39,7 +33,7 @@ user_pref("gfx.content.skia-font-cache-size", 20); // 20 MB; default=5; Chrome=2
 // false = reflow pages whenever new data is received
 //user_pref("content.notify.ontimer", true); // DEFAULT

-// PREF: content notification delay - notification interval (in microseconds) to avoid layout thrashing
+// PREF: notification interval (in microseconds) to avoid layout thrashing
 // When Firefox is loading a page, it periodically reformats
 // or "reflows" the page as it loads. The page displays new elements
 // every 0.12 seconds by default. These redraws increase the total page load time.
@@ -54,11 +48,6 @@ user_pref("gfx.content.skia-font-cache-size", 20); // 20 MB; default=5; Chrome=2
 // [2] https://web.archive.org/web/20240115073722/https://dev.opera.com/articles/efficient-javascript/?page=3#reflow
 // [3] https://web.archive.org/web/20240115073722/https://dev.opera.com/articles/efficient-javascript/?page=3#smoothspeed
 user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
-    //user_pref("content.max.tokenizing.time", 1000000); // (1.00s); alt=2000000; HIDDEN
-    //user_pref("content.interrupt.parsing", true); // HIDDEN
-
-// PREF: UI responsiveness threshold
-//user_pref("content.switch.threshold", 300000); // HIDDEN; default= 750000; alt=500000

 // PREF: new tab preload
 // [WARNING] Disabling this may cause a delay when opening a new tab in Firefox.
@@ -86,6 +75,18 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // PREF: disable preSkeletonUI on startup [WINDOWS]
 //user_pref("browser.startup.preXulSkeletonUI", false);

+// PREF: lazy load iframes
+//user_pref("dom.iframe_lazy_loading.enabled", true); // DEFAULT [FF121+]
+
+// PREF: Prioritized Task Scheduling API 
+// [1] https://github.com/yokoffing/Betterfox/issues/355
+// [2] https://blog.mozilla.org/performance/2022/06/02/prioritized-task-scheduling-api-is-prototyped-in-nightly/
+// [3] https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91
+// [4] https://github.com/WICG/scheduling-apis/blob/main/explainers/prioritized-post-task.md
+// [5] https://wicg.github.io/scheduling-apis/
+// [6] https://caniuse.com/mdn-api_taskcontroller
+//user_pref("dom.enable_web_task_scheduling", true); // DEFAULT [FF142+]
+
 /****************************************************************************
 * SECTION: GFX RENDERING TWEAKS                                            *
 ****************************************************************************/
@@ -101,15 +102,6 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("gfx.webrender.compositor", true); // DEFAULT WINDOWS macOS
    //user_pref("gfx.webrender.compositor.force-enabled", true); // enforce

-// PREF: Webrender layer compositor
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1945683
-// [2] https://www.reddit.com/r/firefox/comments/1p58qre/firefox_is_getting_ready_to_make_youtube_fast/
-// [3] https://www.ghacks.net/2025/11/24/these-two-tweaks-should-improve-firefoxs-performance-on-youtube-significantly/
-//user_pref("gfx.webrender.layer-compositor", true);
-
-// PREF: improve CPU usage on AMD systems
-//user_pref("media.wmf.zero-copy-nv12-textures-force-enabled", true);
-
 // PREF: if your hardware doesn't support Webrender, you can fallback to Webrender's software renderer
 // [1] https://www.ghacks.net/2020/12/14/how-to-find-out-if-webrender-is-enabled-in-firefox-and-how-to-enable-it-if-it-is-not/
 //user_pref("gfx.webrender.software", true); // Software Webrender uses CPU instead of GPU
@@ -126,38 +118,83 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // [2] https://github.com/yokoffing/Betterfox/issues/153
 // [3] https://github.com/yokoffing/Betterfox/issues/198
 //user_pref("gfx.canvas.accelerated", true); // [DEFAULT FF133+]
-    //user_pref("gfx.canvas.accelerated.cache-items", 8192); // [DEFAULT FF135+]
-    user_pref("gfx.canvas.accelerated.cache-size", 512); // default=256; Chrome=512; max=2048
-    //user_pref("gfx.canvas.max-size", 32767); // [DEFAULT]
+    //user_pref("gfx.canvas.accelerated.cache-items", 8192); // DEFAULT FF135+; Chrome=4096
+    user_pref("gfx.canvas.accelerated.cache-size", 512); // default=256; Chrome=512
+    user_pref("gfx.content.skia-font-cache-size", 20); // default=5; Chrome=20
+    // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1239151#c2
+
+// PREF: prefer GPU over CPU
+// At best, the prefs do nothing on Linux/macOS.
+// At worst, it'll result in crashes if the sandboxing is a WIP.
+// [1] https://firefox-source-docs.mozilla.org/dom/ipc/process_model.html#gpu-process
+//user_pref("layers.gpu-process.enabled", true); // DEFAULT WINDOWS
+    //user_pref("layers.gpu-process.force-enabled", true); // enforce
+    //user_pref("layers.mlgpu.enabled", true); // LINUX
+//user_pref("media.hardware-video-decoding.enabled", true); // DEFAULT WINDOWS macOS
+    //user_pref("media.hardware-video-decoding.force-enabled", true); // enforce
+//user_pref("media.gpu-process-decoder", true); // DEFAULT WINDOWS
+//user_pref("media.ffmpeg.vaapi.enabled", true); // LINUX
+
+// PREF: hardware and software decoded video overlay [FF116+]
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1829063
+// [2] https://phabricator.services.mozilla.com/D175993
+//user_pref("gfx.webrender.dcomp-video-hw-overlay-win", true); // DEFAULT
+    //user_pref("gfx.webrender.dcomp-video-hw-overlay-win-force-enabled", true); // enforce
+//user_pref("gfx.webrender.dcomp-video-sw-overlay-win", true); // DEFAULT
+    //user_pref("gfx.webrender.dcomp-video-sw-overlay-win-force-enabled", true); // enforce

 /****************************************************************************
 * SECTION: DISK CACHE                                                     *
 ****************************************************************************/

-// PREF: force a fixed max cache size on disk
-// NOTE: You need this set to false if you are to edit the disk capacity value
-// [1] https://support.mozilla.org/en-US/questions/1271481
-//user_pref("browser.cache.disk.smart_size.enabled", false);
+// PREF: disk cache
+// [NOTE] If you think it helps performance, then feel free to override this.
+// [SETTINGS] See about:cache
+// More efficient to keep the browser cache instead of having to
+// re-download objects for the websites you visit frequently.
+// [1] https://www.janbambas.cz/new-firefox-http-cache-enabled/
+user_pref("browser.cache.disk.enable", false);

 // PREF: disk cache size
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913808,968106,968101
 // [2] https://rockridge.hatenablog.com/entry/2014/09/15/165501
 // [3] https://www.reddit.com/r/firefox/comments/17oqhw3/firefox_and_ssd_disk_consumption/
+//user_pref("browser.cache.disk.smart_size.enabled", false); // force a fixed max cache size on disk
 //user_pref("browser.cache.disk.capacity", 512000); // default=256000; size of disk cache; 1024000=1GB, 2048000=2GB
 //user_pref("browser.cache.disk.max_entry_size", 51200); // DEFAULT (50 MB); maximum size of an object in disk cache

+// PREF: Race Cache With Network (RCWN) [FF59+]
+// [ABOUT] about:networking#rcwn
+// Firefox concurrently sends requests for cached resources to both the
+// local disk cache and the network server. The browser uses whichever
+// result arrives first and cancels the other request. This approach sometimes
+// loads pages faster because the network can be quicker than accessing the cache
+// on a hard drive. When RCWN is enabled, the request might be served from
+// the server even if you have valid entry in the cache. Set to false if your
+// intention is to increase cache usage and reduce network usage.
+// [1] https://slides.com/valentingosu/race-cache-with-network-2017
+// [2] https://simonhearne.com/2020/network-faster-than-cache/
+// [3] https://support.mozilla.org/en-US/questions/1267945
+// [4] https://askubuntu.com/questions/1214862/36-syns-in-a-row-how-to-limit-firefox-connections-to-one-website
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1622859
+// [6] https://soylentnews.org/comments.pl?noupdate=1&sid=40195&page=1&cid=1067867#commentwrap
+//user_pref("network.http.rcwn.enabled", false);
+
+// PREF: attempt to RCWN only if a resource is smaller than this size
+//user_pref("network.http.rcwn.small_resource_size_kb", 256); // DEFAULT
+
 // PREF: cache memory pool
 // Cache v2 provides a memory pool that stores metadata (such as response headers)
 // for recently read cache entries [1]. It is managed by a cache thread, and caches with
 // metadata in the pool appear to be reused immediately.
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=986179
-//user_pref("browser.cache.disk.metadata_memory_limit", 1024); // DEFAULT (1 MB); limit of recent metadata we keep in memory for faster access
+//user_pref("browser.cache.disk.metadata_memory_limit", 500); // default=250 (0.25 MB); limit of recent metadata we keep in memory for faster access

 // PREF: number of chunks we preload ahead of read
 // Large content such as images will load faster.
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913819,988318
 // [2] http://www.janbambas.cz/new-firefox-http-cache-enabled/
-//user_pref("browser.cache.disk.preload_chunk_count", 8); // default=4
+//user_pref("browser.cache.disk.preload_chunk_count", 4); // DEFAULT

 // PREF: the time period used to re-compute the frecency value of cache entries
 // The frequency algorithm is used to select entries, and entries that are recently
@@ -206,9 +243,9 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("browser.cache.jsbc_compression_level", 3);

 // PREF: strategy to use for when the bytecode should be encoded and saved [TESTING ONLY]
-// -1 = makes page load times marginally longer when a page is being loaded for the first time, while
+// -1 makes page load times marginally longer when a page is being loaded for the first time, while
 // subsequent reload of websites will be much much faster.
-// 0 = the bytecode is created every 4 page loads [3].
+// 0 means that the bytecode is created every 4 page loads [3].
 // [1] https://searchfox.org/mozilla-release/source/modules/libpref/init/StaticPrefList.yaml#3461-3488
 // [2] https://www.reddit.com/r/firefox/comments/12786yv/improving_performance_in_firefox_android_part_ii/
 // [3] https://github.com/zen-browser/desktop/issues/217
@@ -232,8 +269,8 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // [1] https://kb.mozillazine.org/Browser.cache.memory.capacity#-1
 // [2] https://searchfox.org/mozilla-central/source/netwerk/cache2/CacheObserver.cpp#94-125
 // [3] https://github.com/WaterfoxCo/Waterfox/commit/3fed16932c80a2f6b37d126fe10aed66c7f1c214
-//user_pref("browser.cache.memory.capacity", 65536); // default=32768 (32 MB)
-    //user_pref("browser.cache.memory.max_entry_size", 10240); // default=5120 (5 MB)
+//user_pref("browser.cache.memory.capacity", 131072); // (128 MB)
+//user_pref("browser.cache.memory.max_entry_size", 20480); // (20 MB); default=5120 (5 MB)

 // PREF: amount of Back/Forward cached pages stored in memory for each tab
 // Pages that were recently visited are stored in memory in such a way
@@ -244,15 +281,7 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // is no reason for Firefox to keep memory for this.
 // -1=determine automatically (8 pages)
 // [1] https://kb.mozillazine.org/Browser.sessionhistory.max_total_viewers#Possible_values_and_their_effects
-//user_pref("browser.sessionhistory.max_total_viewers", 8); // DEFAULT
-//user_pref("browser.sessionstore.max_tabs_undo", 10); // default=25
-    //user_pref("browser.sessionstore.max_entries", 10); // [HIDDEN OR REMOVED]
-    //user_pref("dom.storage.default_quota", 20480); // 20MB; default=5120
-    //user_pref("dom.storage.shadow_writes", true);
-
-// PREF: tell garbage collector to start running when javascript is using xx MB of memory
-// Garbage collection releases memory back to the system.
-//user_pref("javascript.options.mem.high_water_mark", 128); // DEFAULT [HIDDEN OR REMOVED]
+user_pref("browser.sessionhistory.max_total_viewers", 4);

 /****************************************************************************
 * SECTION: MEDIA CACHE                                                     *
@@ -261,8 +290,13 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // PREF: media disk cache
 //user_pref("media.cache_size", 512000); // DEFAULT

+// PREF: media memory cache
+// [1] https://hg.mozilla.org/mozilla-central/file/tip/modules/libpref/init/StaticPrefList.yaml#l9652
+// [2] https://github.com/arkenfox/user.js/pull/941
+user_pref("media.memory_cache_max_size", 65536); // default=8192; AF=65536; alt=131072
+
 // PREF: media cache combine sizes
-//user_pref("media.memory_caches_combined_limit_kb", 1048576); // 1GB; default=524288
+//user_pref("media.memory_caches_combined_limit_kb", 524288); // DEFAULT; alt=1048576
 //user_pref("media.memory_caches_combined_limit_pc_sysmem", 5); // DEFAULT; alt=10; the percentage of system memory that Firefox can use for media caches

 // PREF: Media Source Extensions (MSE) web standard
@@ -274,22 +308,21 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("media.mediasource.enabled", true); // DEFAULT

 // PREF: adjust video buffering periods when not using MSE (in seconds)
-// [NOTE] Does not affect videos over 720p since they use DASH playback [1] or Web Audio API
+// [NOTE] Does not affect videos over 720p since they use DASH playback [1]
 // [1] https://lifehacker.com/preload-entire-youtube-videos-by-disabling-dash-playbac-1186454034
-user_pref("media.cache_readahead_limit", 3600); // 10 min; default=60; stop reading ahead when our buffered data is this many seconds ahead of the current playback
-user_pref("media.cache_resume_threshold", 1800); // 5 min; default=30; when a network connection is suspended, don't resume it until the amount of buffered data falls below this threshold
+user_pref("media.cache_readahead_limit", 7200); // 120 min; default=60; stop reading ahead when our buffered data is this many seconds ahead of the current playback
+user_pref("media.cache_resume_threshold", 3600); // 60 min; default=30; when a network connection is suspended, don't resume it until the amount of buffered data falls below this threshold

 /****************************************************************************
 * SECTION: IMAGE CACHE                                                     *
 ****************************************************************************/

 // PREF: image cache
-//user_pref("image.cache.size", 20971520); // (cache images up to 20 MiB in size) [DEFAULT]
-user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; chunk size for calls to the image decoders
-//user_pref("image.mem.max_decoded_image_kb", 512000); // 500MB [HIDDEN OR REMOVED?]
+//user_pref("image.cache.size", 5242880); // DEFAULT; in MiB; alt=10485760 (cache images up to 10MiB in size)
+user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; alt=65536; chunk size for calls to the image decoders

 // PREF: set minimum timeout to unmap shared surfaces since they have been last used
-// [NOTE] This is only used on 32-bit builds of Firefox where there is meaningful
+// This is only used on 32-bit builds of Firefox where there is meaningful
 // virtual address space pressure.
 // [1] https://phabricator.services.mozilla.com/D109440
 // [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1699224
@@ -316,8 +349,7 @@ user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; chunk si
 user_pref("network.http.max-connections", 1800); // default=900
 user_pref("network.http.max-persistent-connections-per-server", 10); // default=6; download connections; anything above 10 is excessive
    user_pref("network.http.max-urgent-start-excessive-connections-per-host", 5); // default=3
-    //user_pref("network.http.max-persistent-connections-per-proxy", 32); // default=32
-user_pref("network.http.request.max-start-delay", 5); // default=10
+    //user_pref("network.http.max-persistent-connections-per-proxy", 48); // default=32
 //user_pref("network.websocket.max-connections", 200); // DEFAULT

 // PREF: pacing requests [FF23+]
@@ -327,28 +359,198 @@ user_pref("network.http.request.max-start-delay", 5); // default=10
 // Pacing requests adds a slight delay between requests to throttle them.
 // If you have a fast machine and internet connection, disabling pacing
 // may provide a small speed boost when loading pages with lots of requests.
-// false = Firefox will send as many requests as possible without pacing
-// true = Firefox will pace requests (default)
-//user_pref("network.http.pacing.requests.enabled", false);
-    //user_pref("network.http.pacing.requests.min-parallelism", 12); // default=6
-    //user_pref("network.http.pacing.requests.burst", 20); // default=10
+// false=Firefox will send as many requests as possible without pacing
+// true=Firefox will pace requests (default)
+user_pref("network.http.pacing.requests.enabled", false);
+    //user_pref("network.http.pacing.requests.min-parallelism", 10); // default=6
+    //user_pref("network.http.pacing.requests.burst", 14); // default=10

 // PREF: increase DNS cache
 // [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Understanding_latency
-//user_pref("network.dnsCacheEntries", 1600); // default=800
+//user_pref("network.dnsCacheEntries", 1000); // default=400

 // PREF: adjust DNS expiration time
 // [ABOUT] about:networking#dns
 // [NOTE] These prefs will be ignored by DNS resolver if using DoH/TRR.
-user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour; default=60
-    //user_pref("network.dnsCacheExpirationGracePeriod", 120); // default=60; cache DNS entries for 2 minutes after they expire
+user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour
+    //user_pref("network.dnsCacheExpirationGracePeriod", 240); // default=60; cache DNS entries for 4 minutes after they expire

 // PREF: the number of threads for DNS
 //user_pref("network.dns.max_high_priority_threads", 40); // DEFAULT [FF 123?]
 //user_pref("network.dns.max_any_priority_threads", 24); // DEFAULT [FF 123?]

 // PREF: increase TLS token caching 
-//user_pref("network.ssl_tokens_cache_capacity", 8192); // TLS token caching (fast reconnects)
+user_pref("network.ssl_tokens_cache_capacity", 10240); // default=2048; more TLS token caching (fast reconnects)
+
+/****************************************************************************
+ * SECTION: SPECULATIVE LOADING                                            *
+****************************************************************************/
+
+// These are connections that are not explicitly asked for (e.g., clicked on).
+// [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Speculative_loading
+
+// [NOTE] FF85+ partitions (isolates) pooled connections, prefetch connections,
+// pre-connect connections, speculative connections, TLS session identifiers,
+// and other connections. We can take advantage of the speed of pre-connections
+// while preserving privacy. Users may relax hardening to maximize their preference.
+// For more information, see SecureFox: "PREF: State Paritioning" and "PREF: Network Partitioning".
+// [NOTE] To activate and increase network predictions, go to settings in uBlock Origin and uncheck:
+// - "Disable pre-fetching (to prevent any connection for blocked network requests)"
+// [NOTE] Add prefs to "MY OVERRIDES" section and uncomment to enable them in your user.js.
+
+// PREF: link-mouseover opening connection to linked server
+// When accessing content online, devices use sockets as endpoints.
+// The global limit on half-open sockets controls how many speculative
+// connection attempts can occur at once when starting new connections [3].
+// If the user follows through, pages can load faster since some
+// work was done in advance. Firefox opens predictive connections
+// to sites when hovering over New Tab thumbnails or starting a
+// URL Bar search [1] and hyperlinks within a page [2].
+// [NOTE] DNS (if enabled), TCP, and SSL handshakes are set up in advance,
+// but page contents are not downloaded until a click on the link is registered.
+// [1] https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections?redirectslug=how-stop-firefox-automatically-making-connections&redirectlocale=en-US#:~:text=Speculative%20pre%2Dconnections
+// [2] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests
+// [3] https://searchfox.org/mozilla-central/rev/028c68d5f32df54bca4cf96376f79e48dfafdf08/modules/libpref/init/all.js#1280-1282
+// [4] https://www.keycdn.com/blog/resource-hints#prefetch
+// [5] https://3perf.com/blog/link-rels/#prefetch
+user_pref("network.http.speculative-parallel-limit", 0);
+
+// PREF: DNS prefetching for HTMLLinkElement <link rel="dns-prefetch">
+// Used for cross-origin connections to provide small performance improvements.
+// You can enable rel=dns-prefetch for the HTTPS document without prefetching
+// DNS for anchors, whereas the latter makes more specualtive requests [5].
+// [1] https://bitsup.blogspot.com/2008/11/dns-prefetching-for-firefox.html
+// [2] https://css-tricks.com/prefetching-preloading-prebrowsing/#dns-prefetching
+// [3] https://www.keycdn.com/blog/resource-hints#2-dns-prefetching
+// [4] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
+user_pref("network.dns.disablePrefetch", true);
+    user_pref("network.dns.disablePrefetchFromHTTPS", true); // [FF127+ false]
+
+// PREF: DNS prefetch for HTMLAnchorElement (speculative DNS)
+// Disable speculative DNS calls to prevent Firefox from resolving
+// hostnames for other domains linked on a page. This may eliminate
+// unnecessary DNS lookups, but can increase latency when following external links.
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
+// [2] https://github.com/arkenfox/user.js/issues/1870#issuecomment-2220773972
+//user_pref("dom.prefetch_dns_for_anchor_http_document", false); // [FF128+]
+//user_pref("dom.prefetch_dns_for_anchor_https_document", false); // DEFAULT [FF128+]
+
+// PREF: enable <link rel="preconnect"> tag and Link: rel=preconnect response header handling
+//user_pref("network.preconnect", true); // DEFAULT
+
+// PREF: preconnect to the autocomplete URL in the address bar
+// Whether to warm up network connections for autofill or search results.
+// Firefox preloads URLs that autocomplete when a user types into the address bar.
+// Connects to destination server ahead of time, to avoid TCP handshake latency.
+// [NOTE] Firefox will perform DNS lookup (if enabled) and TCP and TLS handshake,
+// but will not start sending or receiving HTTP data.
+// [1] https://www.ghacks.net/2017/07/24/disable-preloading-firefox-autocomplete-urls/
+user_pref("browser.urlbar.speculativeConnect.enabled", false);
+
+// PREF: mousedown speculative connections on bookmarks and history [FF98+]
+// Whether to warm up network connections for places:menus and places:toolbar.
+user_pref("browser.places.speculativeConnect.enabled", false);
+
+// PREF: network module preload <link rel="modulepreload"> [FF115+]
+// High-priority loading of current page JavaScript modules.
+// Used to preload high-priority JavaScript modules for strategic performance improvements.
+// Module preloading allows developers to fetch JavaScript modules and dependencies
+// earlier to accelerate page loads. The browser downloads, parses, and compiles modules
+// referenced by links with this attribute in parallel with other resources, rather
+// than sequentially waiting to process each. Preloading reduces overall download times.
+// Browsers may also automatically preload dependencies without firing extra events.
+// Unlike other pre-connection tags (except rel=preload), this tag is mandatory for the browser.
+// [1] https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel/modulepreload
+//user_pref("network.modulepreload", true); // DEFAULT
+
+// PREF: link prefetching <link rel="prefetch">
+// Pre-populates the HTTP cache by prefetching same-site future navigation
+// resources or subresources used on those pages.
+// Enabling link prefetching allows Firefox to preload pages tagged as important.
+// The browser prefetches links with the prefetch-link tag, fetching resources
+// likely needed for the next navigation at low priority. When clicking a link
+// or loading a new page, prefetching stops and discards hints. Prefetching
+// downloads resources without executing them.
+// [NOTE] Since link prefetch uses the HTTP cache, it has a number of issues
+// with document prefetches, such as being potentially blocked by Cache-Control headers
+// (e.g. cache partitioning).
+// [1] https://developer.mozilla.org/en-US/docs/Glossary/Prefetch
+// [2] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
+// [3] https://timkadlec.com/remembers/2020-06-17-prefetching-at-this-age/
+// [4] https://3perf.com/blog/link-rels/#prefetch
+// [5] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ
+user_pref("network.prefetch-next", false);
+
+// PREF: Fetch Priority API [FF119+]
+// Indicates whether the `fetchpriority` attribute for elements which support it.
+// [1] https://web.dev/articles/fetch-priority
+// [2] https://nitropack.io/blog/post/priority-hints
+// [2] https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/fetchPriority
+// [3] https://developer.mozilla.org/en-US/docs/Web/API/HTMLLinkElement/fetchPriority
+//user_pref("network.fetchpriority.enabled", true);
+
+// PREF: early hints [FF120+]
+// [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/103
+// [2] https://developer.chrome.com/blog/early-hints/
+// [3] https://blog.cloudflare.com/early-hints/
+// [4] https://blog.cloudflare.com/early-hints-performance/
+//user_pref("network.early-hints.enabled", true);
+
+// PREF: `Link: rel=preconnect` in 103 Early Hint response [FF120+]
+// Used to warm most critical cross-origin connections to provide
+// performance improvements when connecting to them.
+// [NOTE] When 0, this is limited by "network.http.speculative-parallel-limit".
+//user_pref("network.early-hints.preconnect.enabled", true);
+//user_pref("network.early-hints.preconnect.max_connections", 10); // DEFAULT
+
+// PREF: Network Predictor (NP)
+// When enabled, it trains and uses Firefox's algorithm to preload page resource
+// by tracking past page resources. It uses a local file (history) of needed images,
+// scripts, etc. to request them preemptively when navigating.
+// [NOTE] By default, it only preconnects DNS, TCP, and SSL handshakes.
+// No data sends until clicking. With "network.predictor.enable-prefetch" enabled,
+// it also performs prefetches.
+// [1] https://wiki.mozilla.org/Privacy/Reviews/Necko
+// [2] https://www.ghacks.net/2014/05/11/seer-disable-firefox/
+// [3] https://github.com/dillbyrne/random-agent-spoofer/issues/238#issuecomment-110214518
+// [4] https://www.igvita.com/posa/high-performance-networking-in-google-chrome/#predictor
+user_pref("network.predictor.enabled", false);
+
+// PREF: Network Predictor fetch for resources ahead of time
+// Prefetch page resources based on past user behavior.
+//user_pref("network.predictor.enable-prefetch", false); // DEFAULT
+
+// PREF: make Network Predictor active when hovering over links
+// When hovering over links, Network Predictor uses past resource history to
+// preemptively request what will likely be needed instead of waiting for the document.
+// Predictive connections automatically open when hovering over links to speed up
+// loading, starting some work in advance.
+//user_pref("network.predictor.enable-hover-on-ssl", false); // DEFAULT
+
+// PREF: assign Network Predictor confidence levels
+// [NOTE] Keep in mind that Network Predictor must LEARN your browsing habits.
+// Editing these lower will cause more speculative connections to occur,
+// which reduces accuracy over time and has privacy implications.
+//user_pref("network.predictor.preresolve-min-confidence", 60); // DEFAULT
+//user_pref("network.predictor.preconnect-min-confidence", 90); // DEFAULT
+//user_pref("network.predictor.prefetch-min-confidence", 100); // DEFAULT
+
+// PREF: other Network Predictor values
+// [NOTE] Keep in mmind that Network Predictor must LEARN your browsing habits.
+//user_pref("network.predictor.prefetch-force-valid-for", 10); // DEFAULT; how long prefetched resources are considered valid and usable (in seconds) for the prediction modeling
+//user_pref("network.predictor.prefetch-rolling-load-count", 10); // DEFAULT; the maximum number of resources that Firefox will prefetch in memory at one time based on prediction modeling
+//user_pref("network.predictor.max-resources-per-entry", 250); // default=100
+//user_pref("network.predictor.max-uri-length", 1000); // default=500
+
+/****************************************************************************
+ * SECTION: EXPERIMENTAL                                                    *
+****************************************************************************/
+
+// PREF: CSS Masonry Layout [NIGHTLY]
+// [1] https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Masonry_Layout
+// [2] https://www.smashingmagazine.com/native-css-masonry-layout-css-grid/
+user_pref("layout.css.grid-template-masonry-value.enabled", true);

 /****************************************************************************
 * SECTION: TAB UNLOAD                                                      *
@@ -376,7 +578,7 @@ user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour; defau
 // and use this percent value (out of 100) to determine if Firefox is in a
 // low memory scenario.
 // [1] https://dev.to/msugakov/taking-firefox-memory-usage-under-control-on-linux-4b02
-//user_pref("browser.low_commit_space_threshold_percent", 5); // default=5; LINUX
+//user_pref("browser.low_commit_space_threshold_percent", 20); // default=5; LINUX

 // PREF: determine how long (in ms) tabs are inactive before they unload
 // 60000=1min; 300000=5min; 600000=10min (default)
@@ -396,7 +598,6 @@ user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour; defau
 // [2] https://firefox-source-docs.mozilla.org/dom/ipc/process_model.html#web-content-processes 
 //user_pref("dom.ipc.processCount", 8); // DEFAULT; Shared Web Content
 //user_pref("dom.ipc.processCount.webIsolated", 1); // default=4; Isolated Web Content
-//user_pref("dom.ipc.keepProcessesAlive.web", 4); // default=1 [HIDDEN OR REMOVED]

 // PREF: use one process for process preallocation cache
 //user_pref("dom.ipc.processPrelaunch.fission.number", 1); // default=3; Process Preallocation Cache
@@ -3,7 +3,7 @@
 * Peskyfox                                                                 *
 * "Aquila non capit muscas"                                                *
 * priority: remove annoyances                                              *
- * version: 152                                                             *
+ * version: 142                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 * credit: Some prefs are reproduced and adapted from the arkenfox project  *
 * credit urL: https://github.com/arkenfox/user.js                          *
@@ -13,6 +13,11 @@
 * SECTION: MOZILLA UI                                                      *
 ****************************************************************************/

+// PREF: Mozilla VPN
+// [1] https://github.com/yokoffing/Betterfox/issues/169
+user_pref("browser.privatebrowsing.vpnpromourl", "");
+    //user_pref("browser.vpn_promo.enabled", false);
+
 // PREF: disable about:addons' Recommendations pane (uses Google Analytics)
 user_pref("extensions.getAddons.showPane", false); // HIDDEN

@@ -43,7 +48,7 @@ user_pref("browser.preferences.moreFromMozilla", false);
 user_pref("browser.aboutConfig.showWarning", false);

 // PREF: disable welcome notices
-user_pref("browser.startup.homepage_override.mstone", "ignore");
+//user_pref("browser.startup.homepage_override.mstone", "ignore"); // What's New page after updates; master switch
 user_pref("browser.aboutwelcome.enabled", false); // disable Intro screens
    //user_pref("startup.homepage_welcome_url", "");
    //user_pref("startup.homepage_welcome_url.additional", "");
@@ -59,10 +64,6 @@ user_pref("browser.profiles.enabled", true);
 // [1] https://github.com/yokoffing/Betterfox/issues/320
 //user_pref("widget.gtk.non-native-titlebar-buttons.enabled", true);

-// PREF: disable search engine switcher in the URL bar [FF136+]
-// WARNING: Hides "Quick Actions" suggestions.
-//user_pref("browser.urlbar.scotchBonnet.enableOverride", false);
-
 /****************************************************************************
 * SECTION: THEME ADJUSTMENTS                                              *
 ****************************************************************************/
@@ -95,41 +96,47 @@ user_pref("browser.privateWindowSeparation.enabled", false);
 // PREF: new tab page wallpapers
 //user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true); // [DEFAULT FF132+]

-// PREF: browser scrollbar styles
-// 0 - Default
-// 1 - Thin and round, more like Chromium ones
-// 2 - Thinner than 1
-// 3 - Even thinner than 1
-// 4 - Very bold and square
-//user_pref("widget.non-native-theme.scrollbar.style", 0); // [DEFAULT]
-
 /****************************************************************************
 * SECTION: AI                                                              *
 ****************************************************************************/
-// PREF: AI default controls
-// [1] https://blog.mozilla.org/en/firefox/how-to-use-ai-controls/
-user_pref("browser.ai.control.default", "blocked");
+// PREF: AI master switch
+// [1] https://github.com/yokoffing/Betterfox/issues/416
 user_pref("browser.ml.enable", false);

-// PREF: Translations
-//user_pref("browser.ai.control.translations", "blocked");
-
-// PREF: Image alt text in Nightly PDF viewer
-//user_pref("browser.ai.control.pdfjsAltText", "blocked");
-
-// PREF: Tab group suggestions
-// [1] https://support.mozilla.org/kb/how-use-ai-enhanced-tab-groups
-//user_pref("browser.ai.control.smartTabGroups", "blocked");
-user_pref("browser.tabs.groups.smart.enabled", false);
-
-// PREF: Key points in link previews
-//user_pref("browser.ai.control.linkPreviewKeyPoints", "blocked");
-user_pref("browser.ml.linkPreview.enabled", false);
-
-// PREF: Chatbot in sidebar
-//user_pref("browser.ai.control.sidebarChatbot", "blocked");
+// PREF: AI chat
 user_pref("browser.ml.chat.enabled", false);
-user_pref("browser.ml.chat.menu", false);
+
+// PREF: link previews
+//user_pref("browser.ml.linkPreview.enabled", false);
+
+// PREF: AI-enhanced tab groups
+// [1] https://support.mozilla.org/kb/how-use-ai-enhanced-tab-groups
+//user_pref("browser.tabs.groups.smart.enabled", false);
+
+/****************************************************************************
+ * SECTION: COOKIE BANNER HANDLING                                          *
+****************************************************************************/
+
+// PREF: Cookie Banner handling
+// [DEPRECIATED] Future of the project is unclear. See [5] and [6].
+// [NOTE] Feature still enforces Total Cookie Protection to limit 3rd-party cookie tracking [1]
+// [1] https://github.com/mozilla/cookie-banner-rules-list/issues/33#issuecomment-1318460084
+// [2] https://phabricator.services.mozilla.com/D153642
+// [3] https://winaero.com/make-firefox-automatically-click-on-reject-all-in-cookie-banner-consent/
+// [4] https://docs.google.com/spreadsheets/d/1Nb4gVlGadyxix4i4FBDnOeT_eJp2Zcv69o-KfHtK-aA/edit#gid=0
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1940418
+// [6] https://github.com/mozilla/cookie-banner-rules-list/issues/544
+// 2: reject banners if it is a one-click option; otherwise, fall back to the accept button to remove banner
+// 1: reject banners if it is a one-click option; otherwise, keep banners on screen
+// 0: disable all cookie banner handling
+//user_pref("cookiebanners.service.mode", 1);
+//user_pref("cookiebanners.service.mode.privateBrowsing", 1);
+
+// PREF: Cookie Banner global rules
+// Global rules that can handle a list of cookie banner libraries and providers on any site.
+// This is used for click rules that can handle common Consent Management Providers (CMP).
+//user_pref("cookiebanners.service.enableGlobalRules", true); // DEFAULT [FF121+]
+//user_pref("cookiebanners.service.enableGlobalRules.subFrames", true); // DEFAULT [FF121+]

 /****************************************************************************
 * SECTION: TRANSLATIONS                                                    *
@@ -154,9 +161,8 @@ user_pref("full-screen-api.transition-duration.enter", "0 0"); // default=200 20
 user_pref("full-screen-api.transition-duration.leave", "0 0"); // default=200 200

 // PREF: disable fullscreen notice
-// [NOTE] Adjust to a sensible value, like 1250, if you have security concerns.
-//user_pref("full-screen-api.warning.timeout", 0); // default=3000; alt=1250
-//user_pref("full-screen-api.warning.delay", -1); // default=500
+user_pref("full-screen-api.warning.delay", -1); // default=500
+user_pref("full-screen-api.warning.timeout", 0); // default=3000

 /****************************************************************************
 * SECTION: FONT APPEARANCE                                                 *
@@ -194,6 +200,7 @@ user_pref("full-screen-api.transition-duration.leave", "0 0"); // default=200 20
 user_pref("browser.urlbar.suggest.engines", false);
    //user_pref("browser.urlbar.suggest.searches", false);
 //user_pref("browser.urlbar.quickactions.enabled", false);
+//user_pref("browser.urlbar.shortcuts.quickactions", false);
 //user_pref("browser.urlbar.suggest.weather", true); // DEFAULT [FF108]
    //user_pref("browser.urlbar.weather.ignoreVPN", false); // DEFAULT
 //user_pref("browser.urlbar.suggest.calculator", true); // [DEFAULT FF137+]
@@ -304,6 +311,7 @@ user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);
 //user_pref("browser.newtabpage.activity-stream.feeds.section.highlights", false); // Recent Activity [DEFAULT]
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeBookmarks", false);
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeDownloads", false);
+      //user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false);
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeVisited", false);
 //user_pref("browser.newtabpage.activity-stream.feeds.snippets", false); // [DEFAULT]

@@ -329,9 +337,8 @@ user_pref("browser.newtabpage.activity-stream.default.sites", "");
 * SECTION: POCKET                                                            *
 ******************************************************************************/

-// PREF: disable built-in Pocket extension
-// [1] https://support.mozilla.org/kb/future-of-pocket
-//user_pref("extensions.pocket.enabled", false); // DEFAULT
+// PREF: Disable built-in Pocket extension
+user_pref("extensions.pocket.enabled", false);
      //user_pref("extensions.pocket.api"," ");
      //user_pref("extensions.pocket.oAuthConsumerKey", " ");
      //user_pref("extensions.pocket.site", " ");
@@ -402,17 +409,6 @@ user_pref("browser.download.open_pdf_attachments_inline", true);
 // [NOTE] "page-width" not needed if using sidebar on load
 //user_pref("pdfjs.defaultZoomValue", page-width);

-/****************************************************************************
- * SECTION: DOM (DOCUMENT OBJECT MODEL)                                     *
-****************************************************************************/
-// PREF: prevent scripts from moving and resizing open windows
-//user_pref("dom.disable_window_move_resize", true);
-
-// PREF: disable beforeunload event
-// [WHY] The method is commonly abused by scam and spyware sites.
-// [1] https://developer.mozilla.org/docs/Web/API/Window/beforeunload_event
-//user_pref("dom.disable_beforeunload", true);
-
 /****************************************************************************
 * SECTION: TAB BEHAVIOR                                                    *
 ****************************************************************************/
@@ -436,7 +432,7 @@ user_pref("browser.download.open_pdf_attachments_inline", true);
 // 0 = force all new windows opened by JavaScript into tabs
 // [NOTE] Most advertising popups also open in new windows with values set
 // [1] https://kb.mozillazine.org/About:config_entries
-//user_pref("browser.link.open_newwindow.restriction", 2); // DEFAULT
+//user_pref("browser.link.open_newwindow.restriction", 0);

 // PREF: override <browser.link.open_newwindow> for external links
 // Set if a different destination for external links is needed
@@ -472,7 +468,7 @@ user_pref("browser.download.open_pdf_attachments_inline", true);
 user_pref("browser.bookmarks.openInTabClosesMenu", false);

 // PREF: restore "View image info" on right-click
-//user_pref("browser.menu.showViewImageInfo", true);
+user_pref("browser.menu.showViewImageInfo", true);

 // PREF: show all matches in Findbar
 user_pref("findbar.highlightAll", true);
@@ -488,6 +484,9 @@ user_pref("findbar.highlightAll", true);
 // [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/10089
 //user_pref("middlemouse.contentLoadURL", false);

+// PREF: Prevent scripts from moving and resizing open windows
+//user_pref("dom.disable_window_move_resize", true);
+
 // PREF: insert new tabs after groups like it
 // true(default) = open new tabs to the right of the parent tab
 // false = new tabs are opened at the far right of the tab bar
@@ -506,7 +505,7 @@ user_pref("findbar.highlightAll", true);
 //user_pref("browser.meta_refresh_when_inactive.disabled", true);

 // PREF: do not select the space next to a word when selecting a word
-//user_pref("layout.word_select.eat_space_to_next_word", false);
+user_pref("layout.word_select.eat_space_to_next_word", false);

 // PREF: controls if a double-click word selection also deletes one adjacent whitespace
 // This mimics native behavior on macOS.
@@ -1,18 +1,13 @@
-![Badge](https://hitscounter.dev/api/hit?url=https%3A%2F%2Fgithub.com%2Fyokoffing%2FBetterfox&label=&icon=github&color=%23198754&message=&style=flat&tz=US%2FEastern)![GitHub Maintained](https://img.shields.io/badge/maintained-yes-green)![GitHub last commit](https://img.shields.io/github/last-commit/yokoffing/betterfox)![GitHub issues](https://img.shields.io/github/issues/yokoffing/betterfox)![GitHub closed issues](https://img.shields.io/github/issues-closed/yokoffing/betterfox)[![shields.io Stars](https://img.shields.io/github/stars/yokoffing/betterfox)](https://github.com/yokoffing/betterfox/stargazers)
+![Badge](https://hitscounter.dev/api/hit?url=https%3A%2F%2Fgithub.com%2Fyokoffing%2FBetterfox&label=&icon=github&color=%23198754&message=&style=flat&tz=US%2FEastern)![GitHub Maintained](https://img.shields.io/badge/maintained-yes-green)![GitHub last commit](https://img.shields.io/github/last-commit/yokoffing/betterfox)![GitHub issues](https://img.shields.io/github/issues/yokoffing/betterfox)![GitHub closed issues](https://img.shields.io/github/issues-closed/yokoffing/betterfox)![GitHub repo size](https://img.shields.io/github/repo-size/yokoffing/betterfox)[![shields.io Stars](https://img.shields.io/github/stars/yokoffing/betterfox)](https://github.com/yokoffing/betterfox/stargazers)

-Do not trust sites that claim to be Betterfox. This page is the only official source.
+# Betterfox 140 ESR
+These prefs are applicable for [Firefox ESR 140.0](https://support.mozilla.org/kb/switch-to-firefox-extended-support-release-esr). <sup>[^more info](https://support.mozilla.org/kb/firefox-esr-release-cycle)</sup>

-# Betterfox
-[about:config](https://support.mozilla.org/en-US/kb/about-config-editor-firefox) tweaks to enhance [Mozilla Firefox](https://www.mozilla.org/en-US/firefox/new/).
-
-## Made for everyday browsing
-Make Firefox more private and secure — without using third-party code.
-
-Betterfox is an opinionated preference list inspired by the [law of diminishing returns](https://miro.medium.com/v2/resize:fit:1206/1*lcOcxriV_II_lZuXQYLoXg.jpeg) and the [minimum effective dose](https://medium.com/the-mission/less-is-more-the-minimum-effective-dose-e6d56625931e).
+Using regular Firefox? [Switch back to the main branch](https://github.com/yokoffing/Betterfox).

 ## Required reading
 0) Create a [backup profile](https://github.com/yokoffing/Betterfox/wiki/Backup).
-1) Download the user.js file [here](https://raw.githubusercontent.com/yokoffing/Betterfox/main/user.js) (Right click > `Save Link As…`).
+1) Download the user.js file [here](https://raw.githubusercontent.com/yokoffing/Betterfox/esr140/user.js) (Right click > `Save Link As…`).
 2) Review both [Common Overrides](https://github.com/yokoffing/Betterfox/wiki/Common-Overrides) and [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening) to make any necessary changes.
 3) Open Firefox. In the URL bar, type `about:profiles` and press **Enter**.
 4) For the profile you want to use, click **Open Folder** in the **Root Directory** section.
@@ -22,78 +17,15 @@ Betterfox is an opinionated preference list inspired by the [law of diminishing
 1) Get an **ad blocker** like [uBlock Origin](https://addons.mozilla.org/blog/ublock-origin-everything-you-need-to-know-about-the-ad-blocker/) with our [recommended filters](https://github.com/yokoffing/filterlists#guidelines).
 2) Enable **DNS-level protection** with your chosen [provider](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening#secure-dns) to further protect against security threats, ads, and trackers.

-## Simple goals
-1) **Minimalism:** get what isn't needed out of the way
-2) **Efficiency:** unleash Firefox's ability to be fast and performant
-3) **Privacy:** protect your data without causing site breakage
-
-## Simple configs
-
-`Securefox`, `Peskyfox`, and `Smoothfox` are guides to settings within Firefox. The `user.js` — a configuration file that controls Firefox settings — is curated from these guides.
-
-| List      | Description |
-|:---------:|-------------|
-| [user.js](https://github.com/yokoffing/Betterfox/blob/main/user.js) | All the essentials. None of the breakage. This is your `user.js`. |
-| [Securefox](https://github.com/yokoffing/Betterfox/blob/main/Securefox.js) | Protect user data without causing site breakage. |
-| [Peskyfox](https://github.com/yokoffing/Betterfox/blob/main/Peskyfox.js)  | Provide a clean, distraction-free browsing experience. |
-| [Smoothfox](https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js)<br>(optional) | Get Edge-like smooth scrolling on your favorite browser — or choose something more your style. |
-
-## Recognition
-
-### Browser Integration
-> [!IMPORTANT]
-> While the browsers listed below incorporate Betterfox to some extent, they often modify it in ways that reduce its effectiveness. For optimal results, apply the `user.js` file even when using Firefox forks.
-
-* [Zen](https://github.com/zen-browser/desktop?tab=readme-ov-file) | [files](https://github.com/zen-browser/desktop/tree/stable/prefs) (July 2024)
-* [FireDragon](https://github.com/dr460nf1r3/firedragon-browser/blob/master/README.md) | [files](https://github.com/dr460nf1r3/firedragon-browser/blob/55fc6e5029542cd90fabe23cb44c89568d74d006/firedragon.cfg#L822-L824) (Jan 2024?)
-* [Midori](https://github.com/goastian/midori-desktop/blob/ESR115/README.md) | [files](https://github.com/goastian/midori-desktop/blob/f3d8d96eb8e08f35a64e3c957bea4e839d7c7730/floorp/browser/components/userjsUtils.sys.mjs#L28-L33) (Dec 2023?)
-* [Mercury](https://github.com/Alex313031/Mercury/releases/tag/v.115.3.0) | [files](https://github.com/Alex313031/Mercury/commit/eb9600f9fb8f48c8f5b5c6f3264fbcdb5caff7f5) (Sep 2023)
-* [Waterfox](https://www.waterfox.net/docs/releases/G6.0/) | [files](https://github.com/WaterfoxCo/Waterfox/tree/current/waterfox/browser/app/profile) (Sep 2023)
-* [Floorp](https://github.com/Floorp-Projects/Floorp#-betterfox) <sup>[1](https://github.com/Floorp-Projects/Floorp/issues/233#issuecomment-1543557167) [2](https://blog.ablaze.one/3135/2023-04-01/)</sup> | [files](https://github.com/Floorp-Projects/Floorp/blob/ESR115/floorp/browser/components/preferences/userjs.inc.xhtml) (Apr 2023)
-* [Pulse](https://github.com/pulse-browser/browser#%EF%B8%8F-credits) | [files](https://github.com/pulse-browser/browser/tree/alpha/src/browser/app/profile) (Dec 2021)
-* [Ghostery Private Browser](https://github.com/ghostery/user-agent-desktop#community) <sup>[1](https://web.archive.org/web/20210509171835/https://www.ghostery.com/ghostery-dawn-update-more/) [2](https://web.archive.org/web/20210921114333/https://www.ghostery.com/ghostery-dawn-product-update/)</sup> | [files](https://github.com/ghostery/user-agent-desktop/tree/main/brands/ghostery/branding/pref) (Feb 2021)
-
-### YouTube
-* [A Better Firefox](https://youtu.be/JuHIwCFx34Q?si=1dx39t3HX5kzNVj-&t=133) (Mar 2025)
-* [Ditch Chrome for One Of These BETTER BROWSERS!](https://youtu.be/ygkxFc8SZlc?si=m5NQe-b_oFXs5crb&t=230) (Aug 2024)
-* [The ULTIMATE Browser Tier List](https://youtu.be/j5r6jFE8gic?t=560) (Mar 2023)
-* [I Hate Firefox. But I'm Still Switching Back to It.](https://youtu.be/w0SJFED5xK0?t=220) (Nov 2022)
-* [Español] [Optimize and Accelerate Firefox](https://www.youtube.com/watch?v=3XtoONmq5_Q) (Nov 2022) 
-* [How To Improve Firefox Performance](https://www.youtube.com/watch?v=N8IOJiOFVEk) (Dec 2021)
-
-### Podcasts
-* [Italian] [Digitalia.fm](https://digitalia.fm/684/) | 1:41:35–1:42:41 (July 2023)
-* [GhoSTORIES with Franz & Pete](https://anchor.fm/ghostories/episodes/S2E6-We-Talking-Ghostery-Dawn----Again-er0q02/a-a4o5vmh) | 17:05–18:40 (Feb 2021)
-
-### Articles
-* [How I Set Up Firefox for True Privacy ](https://dtptips.com/how-i-set-up-firefox-for-true-privacy-hint-its-not-the-default-setup/) (Oct 2025)
-* [Phishing Bank Logins Over Plain HTTP in 2025](https://vrls.ws/posts/phishing-bank-logins-over-plain-http-in-2025/) (Oct 2025)
-* [Español] [Firefox is an excellent browser, but this small modification makes it much faster and more private](https://www.genbeta.com/a-fondo/firefox-excelente-navegador-esta-pequena-modificacion-hace-mucho-rapido-privado-asi-funciona-betterfox) (Jan 2025)
-* [Browsers for Daily Use](https://anhkhoakz.neocities.org/blog/browsers-for-daily-using/#firefox-but-hardened) (Jan 2024)
-* [Avoiding Manifest V3 – Escaping the Ad-Pocalypse](https://www.xbitlabs.com/avoiding-manifest-v3/) (Dec 2023)
-* [German] [Pulse Browser Review: Firefox fork with Turbo tweaks and Opera sidebar](https://www.computerbild.de/artikel/cb-Tipps-Software-Pulse-Browser-Review-ein-Firefox-Fork-mit-Seitenleiste-wie-bei-Opera-35644139.html#:~:text=Noch%20mehr%20Speed%2DFeatures) (Apr 2023)
-* [2023 Browser Showdown: Comparing Chrome, Brave, Firefox, Vivaldi, and Opera](https://www.appdate.lk/technology/2023-browser-showdown/) (Jan 2023)
-
-### Guides
-* [FMHY Browser Tools: Privacy Tweaks](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/storage/#wiki_privacy_based_browsers)
-* [Firefox-UI-Fix](https://github.com/black7375/Firefox-UI-Fix/wiki/Tips#privacy)
-* [Narsil/desktop_user.js](https://git.nixnet.services/Narsil/desktop_user.js#thanks)
-* [pyllyukko/user.js](https://github.com/pyllyukko/user.js) [comparator](https://jm42.github.io/compare-user.js/)
-
-### Reviews
-* “I use this one ... The performance is absolutely amazing. There’s definitely a huge difference when it comes to loading sites.” - [DIRIKtv](https://youtu.be/N8IOJiOFVEk?t=16)
-* "BetterFox ... will provide good-enough privacy and help with performance." - [Qdoit12Super](https://old.reddit.com/r/browsers/comments/139h4my/suggestion_for_finding_3_good_privacy_focus/jj3n3qn/?context=2)
-* "...drastically changed the experience with Firefox for me. Improved speed, security, smoothness, and removed clutter." - [AppDate](https://www.appdate.lk/technology/2023-browser-showdown/#:~:text=Used%20the%20BetterFox%20user%20config%20settings%20with%20some%20overrides%20which%20drastically%20changed%20the%20experience)
-* "Firefox with uBlock Origin extension and tuned with Betterfox is faster than Safari."  - [cugeloid](https://elephas.app/blog/best-browsers-mac#what-is-the-best-browser-for-mac-according-to-redditandnbsp)
-* "I don't think I could use Firefox without Betterfox." - [Professional_Fun4616](https://old.reddit.com/r/nextdns/comments/15y815f/the_people_behind_betterfox_have_this_awesome/jxb7cir/?context=3)
-* "The best collection of tweaks available." - [AuRiMaS](https://old.reddit.com/r/MozillaFirefox/comments/15cc1vk/about_changes_in_aboutconfig/jtyx910/?context=3)
-* "FF is now much snappier!" - [whotheff](https://old.reddit.com/r/firefox/comments/z5auzi/firefox_not_properly_usingrecognizing_gpu_poor/iy36hyz/)
-* "...the experience is so good now I don’t think I’ll go back to any of the chromium based browsers." - [Mr_Compromise](https://old.reddit.com/r/pcmasterrace/comments/zwioe1/what_browser_will_you_be_using_in_2023_please/j1wmbxo/)
-
 ## Support

 If you like the project, leave a :star: (top right) and become a [stargazer](https://github.com/yokoffing/Betterfox/stargazers)!

+[![Stargazers repo roster for @yokoffing/Betterfox](https://reporoster.com/stars/dark/yokoffing/Betterfox)](https://github.com/yokoffing/Betterfox/stargazers)
+
+<a href='https://ko-fi.com/Q5Q5G8EPH' target='_blank'><img height='36' style='border:0px;height:36px;' src='https://storage.ko-fi.com/cdn/kofi2.png?v=3' border='0' alt='Buy Me a Coffee at ko-fi.com' /></a>
+<noscript><a href="https://liberapay.com/yokoffing/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a></noscript>
+
 ## Credit
 * Betterfox mirrors the ongoing work provided by [arkenfox](https://github.com/arkenfox/user.js). Additionally, this repository includes content reproduced or adapted from other sources. Credit for overlapping material goes to the original authors.
 * Appreciation goes to the [Firefox](https://www.mozilla.org/en-US/firefox/new/) team and developers working on [Bugzilla](https://bugzilla.mozilla.org/home), fighting for the open web.
@@ -3,7 +3,7 @@
 * Securefox                                                                *
 * "Natura non contristatur"                                                *     
 * priority: provide sensible security and privacy                          *
- * version: 152                                                             *
+ * version: 142                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 * credit: Most prefs are reproduced and adapted from the arkenfox project  *
 * credit urL: https://github.com/arkenfox/user.js                          *
@@ -12,16 +12,19 @@
 /****************************************************************************
 * SECTION: TRACKING PROTECTION                                             *
 ****************************************************************************/
-// PREF: enable ETP Strict Mode [FF86+]
-// ETP Strict Mode enables Total Cookie Protection (TCP)
-// [NOTE] Adding site exceptions disables all ETP protections for that site and increases the risk of
-// cross-site state tracking e.g. exceptions for SiteA and SiteB means PartyC on both sites is shared
-// [1] https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/
-// [2] https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
-// [3] https://www.reddit.com/r/firefox/comments/l7xetb/network_priority_for_firefoxs_enhanced_tracking/gle2mqn/?web2x&context=3
-// [SETTING] to add site exceptions: Urlbar>ETP Shield
-// [SETTING] to manage site exceptions: Options>Privacy & Security>Enhanced Tracking Protection>Manage Exceptions
-user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
+
+// PREF: Enhanced Tracking Protection (ETP)
+// Tracking Content blocking will strip cookies and block all resource requests to domains listed in Disconnect.me.
+// Firefox deletes all stored site data (incl. cookies, browser storage) if the site is a known tracker and hasn’t
+// been interacted with in the last 30 days.
+// [ALLOWLIST] https://disconnect.me/trackerprotection/unblocked
+// [NOTE] FF86: "Strict" tracking protection enables dFPI.
+// [1] https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
+// [2] https://www.reddit.com/r/firefox/comments/l7xetb/network_priority_for_firefoxs_enhanced_tracking/gle2mqn/?web2x&context=3
+user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1970647
+user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true); // [FF142+]
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true); // [FF142+]
 //user_pref("privacy.trackingprotection.enabled", true); // enabled with "Strict"
 //user_pref("privacy.trackingprotection.pbmode.enabled", true); // DEFAULT
 //user_pref("browser.contentblocking.customBlockList.preferences.ui.enabled", false); // DEFAULT
@@ -41,26 +44,6 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
 //user_pref("privacy.bounceTrackingProtection.mode", 1); // [FF131+] [ETP FF133+]
 // [1] https://searchfox.org/mozilla-central/source/toolkit/components/antitracking/bouncetrackingprotection/nsIBounceTrackingProtection.idl#11-23

-// PREF: disable ETP web compat features (about:compat) [FF93+]
-// [SETUP-HARDEN] Includes skip lists, heuristics (SmartBlock) and automatic grants
-// Opener and redirect heuristics are granted for 30 days, see [3]
-// [1] https://blog.mozilla.org/security/2021/07/13/smartblock-v2/
-// [2] https://hg.mozilla.org/mozilla-central/rev/e5483fd469ab#l4.12
-// [3] https://developer.mozilla.org/docs/Web/Privacy/Guides/State_Partitioning#storage_access_heuristics
-//user_pref("privacy.antitracking.enableWebcompat", false);
-    //user_pref("privacy.restrict3rdpartystorage.heuristic.navigation", false);
-    //user_pref("privacy.restrict3rdpartystorage.heuristic.opened_window_after_interaction", false);
-        //user_pref("privacy.restrict3rdpartystorage.heuristic.recently_visited", false); // DEFAULT
-        //user_pref("privacy.restrict3rdpartystorage.heuristic.redirect", false); // DEFAULT
-        //user_pref("privacy.restrict3rdpartystorage.heuristic.window_open", false); // DEFAULT
-
-// PREF: set ETP Strict/Custom exception lists (FF141+)
-// [SETTING] Options>Privacy & Security>Enhanced Tracking Protection>Strict/Custom>Fix major [baseline] | minor [convenience]
-// [1] https://support.mozilla.org/en-US/kb/manage-enhanced-tracking-protection-exceptions
-// [2] https://etp-exceptions.mozilla.org/
-//user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true); // [DEFAULT: true]
-//user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true); // [DEFAULT: true]
-
 // PREF: query stripping
 // Currently uses a small list [1]
 // We set the same query stripping list that Brave and LibreWolf uses [2]
@@ -83,6 +66,22 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
 //user_pref("extensions.webcompat.enable_shims", true); // [HIDDEN] enabled with "Strict"
 //user_pref("extensions.webcompat.smartblockEmbeds.enabled", true); // [DEFAULT FF137+]

+// PREF: allow embedded tweets and reddit posts [FF136+]
+// [TEST - reddit embed] https://www.pcgamer.com/amazing-halo-infinite-bugs-are-already-rolling-in/
+// [TEST - instagram embed] https://www.ndtv.com/entertainment/bharti-singh-and-husband-haarsh-limbachiyaa-announce-pregnancy-see-trending-post-2646359
+// [TEST - tweet embed] https://www.newsweek.com/cryptic-tweet-britney-spears-shows-elton-john-collab-may-date-back-2015-1728036
+// [TEST - tiktok embed] https://www.vulture.com/article/snl-adds-four-new-cast-members-for-season-48.html
+// [TEST - truthsocial embed] https://www.newsweek.com/donald-trump-congratulates-patrick-brittany-mahomes-new-baby-2027097
+// [1] https://www.reddit.com/r/firefox/comments/l79nxy/firefox_dev_is_ignoring_social_tracking_preference/gl84ukk
+// [2] https://www.reddit.com/r/firefox/comments/pvds9m/reddit_embeds_not_loading/
+// [3] https://github.com/yokoffing/Betterfox/issues/413
+//user_pref("urlclassifier.trackingSkipURLs", "embed.reddit.com, *.twitter.com, *.twimg.com"); // MANUAL [FF136+]
+//user_pref("urlclassifier.features.socialtracking.skipURLs", "*.twitter.com, *.twimg.com"); // MANUAL [FF136+]
+
+// PREF: allow embedded tweets, Instagram and Reddit posts, and TikTok embeds [before FF136+]
+//user_pref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com, *.tiktok.com"); // MANUAL
+//user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com"); // MANUAL
+
 // PREF: lower the priority of network loads for resources on the tracking protection list [NIGHTLY]
 // [1] https://github.com/arkenfox/user.js/issues/102#issuecomment-298413904
 //user_pref("privacy.trackingprotection.lower_network_priority", true);
@@ -202,9 +201,8 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
 // PREF: remove temp files opened from non-PB windows with an external application
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=302433,1738574
 // [2] https://github.com/arkenfox/user.js/issues/1732
-// [3] https://bugzilla.mozilla.org/302433
 user_pref("browser.download.start_downloads_in_tmp_dir", true); // [FF102+]
-//user_pref("browser.helperApps.deleteTempFileOnExit", true); // DEFAULT [FF108]
+user_pref("browser.helperApps.deleteTempFileOnExit", true);

 // PREF: disable UITour backend
 // This way, there is no chance that a remote page can use it.
@@ -278,12 +276,12 @@ user_pref("security.OCSP.enabled", 0);
 // CRLite is faster and more private than OCSP [2].
 // 0 = disabled
 // 1 = consult CRLite but only collect telemetry
-// 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results (default)
-// 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (removed FF145)
+// 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results
+// 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" [FF99+, default FF100+]
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1429800,1670985,1753071
 // [2] https://blog.mozilla.org/security/tag/crlite/
 //user_pref("security.remote_settings.crlite_filters.enabled", true); // [DEFAULT: true FF137+]
-//user_pref("security.pki.crlite_mode", 2); // [DEFAULT: 2 FF142+]
+user_pref("security.pki.crlite_mode", 2);

 // PREF: HTTP Public Key Pinning (HPKP)
 // HPKP enhances the security of SSL certificates by associating
@@ -323,7 +321,7 @@ user_pref("security.OCSP.enabled", 0);
 //user_pref("browser.contentanalysis.default_result", 0; // [FF127+] [DEFAULT]

 // PREF: disable referrer and storage access for resources injected by content scripts [FF139+]
-user_pref("privacy.antitracking.isolateContentScriptResources", true);
+//user_pref("privacy.antitracking.isolateContentScriptResources", true);

 // PREF: disable CSP Level 2 Reporting [FF140+]
 // [1] https://github.com/yokoffing/Betterfox/issues/415
@@ -349,7 +347,7 @@ user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
 // know that. Setting this pref to true is the only way for the
 // browser to ensure there will be no unsafe renegotiations on
 // the channel between the browser and the server.
-// [STATS] SSL Labs > Renegotiation Support (Nov 2025) reports almost 99.8% of top sites have secure renegotiation [4].
+// [STATS] SSL Labs > Renegotiation Support (May 2024) reports over 99.7% of top sites have secure renegotiation [4].
 // [1] https://wiki.mozilla.org/Security:Renegotiation
 // [2] https://datatracker.ietf.org/doc/html/rfc5746
 // [3] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
@@ -357,8 +355,6 @@ user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
 //user_pref("security.ssl.require_safe_negotiation", true);

 // PREF: display advanced information on Insecure Connection warning pages
-// This pref only works when it's possible to add an exception,
-// i.e. it doesn't work for HSTS discrepancies (https://subdomain.preloaded-hsts.badssl.com/)
 // [TEST] https://expired.badssl.com/
 user_pref("browser.xul.error_pages.expert_bad_cert", true);

@@ -419,20 +415,9 @@ user_pref("security.tls.enable_0rtt_data", false);
 * SECTION: DISK AVOIDANCE                                                  *
 ****************************************************************************/

-// PREF: disk cache
-// [NOTE] If you think it helps performance, then feel free to override this.
-// [SETTINGS] See about:cache
-// More efficient to keep the browser cache instead of having to
-// re-download objects for the websites you visit frequently.
-// [1] https://www.janbambas.cz/new-firefox-http-cache-enabled/
-user_pref("browser.cache.disk.enable", false);
-
-// PREF: set media cache in Private Browsing to in-memory and increase its maximum size
+// PREF: set media cache in Private Browsing to in-memory
 // [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB
-// [1] https://hg.mozilla.org/mozilla-central/file/tip/modules/libpref/init/StaticPrefList.yaml#l9652
-// [2] https://github.com/arkenfox/user.js/pull/941#issuecomment-668278121
 user_pref("browser.privatebrowsing.forceMediaMemoryCache", true);
-user_pref("media.memory_cache_max_size", 65536); // 64 MB; default=8192; AF=65536

 // PREF: minimum interval (in ms) between session save operations
 // Firefox periodically saves the user's session so it can restore
@@ -461,6 +446,10 @@ user_pref("browser.sessionstore.interval", 60000); // 1 minute; default=15000 (1
 // Favicons are stored as .ico files in profile_dir\shortcutCache.
 //user_pref("browser.shell.shortcutFavicons", false);

+// PREF: remove temp files opened with an external application
+// [1] https://bugzilla.mozilla.org/302433
+//user_pref("browser.helperApps.deleteTempFileOnExit", true); // DEFAULT [FF108]
+
 // PREF: disable page thumbnails capturing
 // Page thumbnails are only used in chrome/privileged contexts.
 //user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF]
@@ -505,16 +494,8 @@ user_pref("browser.sessionstore.interval", 60000); // 1 minute; default=15000 (1
   //user_pref("privacy.cpd.siteSettings", false);
   //user_pref("privacy.clearHistory.siteSettings", false);

-// PREF: purge session icon in Private Browsing windows [FF152+]
-//user_pref("browser.privatebrowsing.resetPBM.enabled", true); // [DEFAULT FF152+]
-
-// PREF: delete files downloaded in Private Browsing when all private windows are closed
-// When downloading a file in private browsing mode, the user will be prompted
-// to chose whether they want to keep or delete files that are downloaded
-// while in private browsing. 
-//user_pref("browser.download.enableDeletePrivate", true);
-//user_pref("browser.download.deletePrivateChosen", true);
-//user_pref("browser.download.deletePrivate", true);
+// PREF: purge session icon in Private Browsing windows
+user_pref("browser.privatebrowsing.resetPBM.enabled", true);

 /******************************************************************************
 * SECTION: SHUTDOWN & SANITIZING                                             *
@@ -573,128 +554,6 @@ user_pref("privacy.history.custom", true);
 // [WARNING] Be selective with what cookies you keep, as they also disable partitioning [1]
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1767271

-/****************************************************************************
- * SECTION: SPECULATIVE LOADING                                            *
-****************************************************************************/
-
-// These are connections that are not explicitly asked for (e.g., clicked on).
-// [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Speculative_loading
-
-// [NOTE] FF85+ partitions (isolates) pooled connections, prefetch connections,
-// pre-connect connections, speculative connections, TLS session identifiers,
-// and other connections. We can take advantage of the speed of pre-connections
-// while preserving privacy. Users may relax hardening to maximize their preference.
-// For more information, see SecureFox: "PREF: State Paritioning" and "PREF: Network Partitioning".
-// [NOTE] To activate and increase network predictions, go to settings in uBlock Origin and uncheck:
-// - "Disable pre-fetching (to prevent any connection for blocked network requests)"
-// [NOTE] Add prefs to "MY OVERRIDES" section and uncomment to enable them in your user.js.
-
-// PREF: link-mouseover opening connection to linked server
-// When accessing content online, devices use sockets as endpoints.
-// The global limit on half-open sockets controls how many speculative
-// connection attempts can occur at once when starting new connections [3].
-// If the user follows through, pages can load faster since some
-// work was done in advance. Firefox opens predictive connections
-// to sites when hovering over New Tab thumbnails or starting a
-// URL Bar search [1] and hyperlinks within a page [2].
-// [NOTE] DNS (if enabled), TCP, and SSL handshakes are set up in advance,
-// but page contents are not downloaded until a click on the link is registered.
-// [1] https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections?redirectslug=how-stop-firefox-automatically-making-connections&redirectlocale=en-US#:~:text=Speculative%20pre%2Dconnections
-// [2] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests
-// [3] https://searchfox.org/mozilla-central/rev/028c68d5f32df54bca4cf96376f79e48dfafdf08/modules/libpref/init/all.js#1280-1282
-// [4] https://www.keycdn.com/blog/resource-hints#prefetch
-// [5] https://3perf.com/blog/link-rels/#prefetch
-user_pref("network.http.speculative-parallel-limit", 0);
-
-// PREF: DNS prefetching for HTMLLinkElement <link rel="dns-prefetch">
-// Used for cross-origin connections to provide small performance improvements.
-// You can enable rel=dns-prefetch for the HTTPS document without prefetching
-// DNS for anchors, whereas the latter makes more specualtive requests [5].
-// [1] https://bitsup.blogspot.com/2008/11/dns-prefetching-for-firefox.html
-// [2] https://css-tricks.com/prefetching-preloading-prebrowsing/#dns-prefetching
-// [3] https://www.keycdn.com/blog/resource-hints#2-dns-prefetching
-// [4] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
-// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
-user_pref("network.dns.disablePrefetch", true);
-    user_pref("network.dns.disablePrefetchFromHTTPS", true); // [FF127+ false]
-
-// PREF: DNS prefetch for HTMLAnchorElement (speculative DNS)
-// Disable speculative DNS calls to prevent Firefox from resolving
-// hostnames for other domains linked on a page. This may eliminate
-// unnecessary DNS lookups, but can increase latency when following external links.
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
-// [2] https://github.com/arkenfox/user.js/issues/1870#issuecomment-2220773972
-//user_pref("dom.prefetch_dns_for_anchor_http_document", false); // [FF128+]
-//user_pref("dom.prefetch_dns_for_anchor_https_document", false); // DEFAULT [FF128+]
-
-// PREF: enable <link rel="preconnect"> tag and Link: rel=preconnect response header handling
-//user_pref("network.preconnect", true); // DEFAULT
-
-// PREF: preconnect to the autocomplete URL in the address bar
-// Whether to warm up network connections for autofill or search results.
-// Firefox preloads URLs that autocomplete when a user types into the address bar.
-// Connects to destination server ahead of time, to avoid TCP handshake latency.
-// [NOTE] Firefox will perform DNS lookup (if enabled) and TCP and TLS handshake,
-// but will not start sending or receiving HTTP data.
-// [1] https://www.ghacks.net/2017/07/24/disable-preloading-firefox-autocomplete-urls/
-user_pref("browser.urlbar.speculativeConnect.enabled", false);
-
-// PREF: mousedown speculative connections on bookmarks and history [FF98+]
-// Whether to warm up network connections for places:menus and places:toolbar.
-user_pref("browser.places.speculativeConnect.enabled", false);
-
-// PREF: network module preload <link rel="modulepreload"> [FF115+]
-// High-priority loading of current page JavaScript modules.
-// Used to preload high-priority JavaScript modules for strategic performance improvements.
-// Module preloading allows developers to fetch JavaScript modules and dependencies
-// earlier to accelerate page loads. The browser downloads, parses, and compiles modules
-// referenced by links with this attribute in parallel with other resources, rather
-// than sequentially waiting to process each. Preloading reduces overall download times.
-// Browsers may also automatically preload dependencies without firing extra events.
-// Unlike other pre-connection tags (except rel=preload), this tag is mandatory for the browser.
-// [1] https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel/modulepreload
-//user_pref("network.modulepreload", true); // DEFAULT
-
-// PREF: link prefetching <link rel="prefetch">
-// Pre-populates the HTTP cache by prefetching same-site future navigation
-// resources or subresources used on those pages.
-// Enabling link prefetching allows Firefox to preload pages tagged as important.
-// The browser prefetches links with the prefetch-link tag, fetching resources
-// likely needed for the next navigation at low priority. When clicking a link
-// or loading a new page, prefetching stops and discards hints. Prefetching
-// downloads resources without executing them.
-// [NOTE] Since link prefetch uses the HTTP cache, it has a number of issues
-// with document prefetches, such as being potentially blocked by Cache-Control headers
-// (e.g. cache partitioning).
-// [1] https://developer.mozilla.org/en-US/docs/Glossary/Prefetch
-// [2] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
-// [3] https://timkadlec.com/remembers/2020-06-17-prefetching-at-this-age/
-// [4] https://3perf.com/blog/link-rels/#prefetch
-// [5] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ
-user_pref("network.prefetch-next", false);
-
-// PREF: Fetch Priority API [FF119+]
-// Indicates whether the `fetchpriority` attribute for elements which support it.
-// [1] https://web.dev/articles/fetch-priority
-// [2] https://nitropack.io/blog/post/priority-hints
-// [2] https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/fetchPriority
-// [3] https://developer.mozilla.org/en-US/docs/Web/API/HTMLLinkElement/fetchPriority
-//user_pref("network.fetchpriority.enabled", true);
-
-// PREF: early hints [FF120+]
-// [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/103
-// [2] https://developer.chrome.com/blog/early-hints/
-// [3] https://blog.cloudflare.com/early-hints/
-// [4] https://blog.cloudflare.com/early-hints-performance/
-//user_pref("network.early-hints.enabled", true);
-
-// PREF: `Link: rel=preconnect` in 103 Early Hint response [FF120+]
-// Used to warm most critical cross-origin connections to provide
-// performance improvements when connecting to them.
-// [NOTE] When 0, this is limited by "network.http.speculative-parallel-limit".
-//user_pref("network.early-hints.preconnect.enabled", true);
-//user_pref("network.early-hints.preconnect.max_connections", 10); // DEFAULT
-
 /******************************************************************************
 * SECTION: SEARCH / URL BAR                                                 *
 ******************************************************************************/
@@ -797,14 +656,16 @@ user_pref("network.IDN_show_punycode", true);
 /******************************************************************************
 * SECTION: HTTPS-FIRST POLICY                          *
 ******************************************************************************/
+
 // PREF: HTTPS-First Policy
 // Firefox attempts to make all connections to websites secure,
 // and falls back to insecure connections only when a website
 // does not support it. Unlike HTTPS-Only Mode, Firefox
 // will NOT ask for your permission before connecting to a website
 // that doesn’t support secure connections.
-// As of October 2025, Google estimates that 3-5% of traffic
-// is insecure, allowing attackers to eavesdrop on or change that data [8].
+// As of August 2023, Google estimates that 5-10% of traffic
+// has remained on HTTP, allowing attackers to eavesdrop
+// on or change that data [6].
 // [NOTE] HTTPS-Only Mode needs to be disabled for HTTPS First to work.
 // [TEST] http://example.com [upgrade]
 // [TEST] http://httpforever.com/ [no upgrade]
@@ -815,21 +676,10 @@ user_pref("network.IDN_show_punycode", true);
 // [5] https://www.cloudflare.com/learning/ssl/why-use-https/
 // [6] https://blog.chromium.org/2023/08/towards-https-by-default.html
 // [7] https://attackanddefense.dev/2025/03/31/https-first-in-firefox-136.html
-// [8] https://security.googleblog.com/2025/10/https-by-default.html
 //user_pref("dom.security.https_first", true); // [DEFAULT FF136+]
 //user_pref("dom.security.https_first_pbm", true); // [DEFAULT FF91+]
 //user_pref("dom.security.https_first_schemeless", true); // [FF120+] [DEFAULT FF129+]

-// PREF: block insecure passive content (images) on HTTPS pages
-// [WARNING] This preference blocks all mixed content, including upgradable.
-// Firefox still attempts an HTTP connection if it can't find a secure one,
-// even with HTTPS First Policy. Although rare, this leaves a small risk of
-// a malicious image being served through a MITM attack.
-// Disable this pref if using HTTPS-Only Mode.
-// [NOTE] Enterprise users may need to enable this setting [1].
-// [1] https://blog.mozilla.org/security/2024/06/05/firefox-will-upgrade-more-mixed-content-in-version-127/
-//user_pref("security.mixed_content.block_display_content", true); // Defense-in-depth (see HTTPS-Only mode)
-
 /******************************************************************************
 * SECTION: HTTPS-ONLY MODE                              *
 ******************************************************************************/
@@ -838,8 +688,9 @@ user_pref("network.IDN_show_punycode", true);
 // by a server. Options to use HTTP are then provided.
 // [NOTE] When "https_only_mode" (all windows) is true,
 // "https_only_mode_pbm" (private windows only) is ignored.
-// As of October 2025, Google estimates that 3-5% of traffic
-// is insecure, allowing attackers to eavesdrop on or change that data [6].
+// As of August 2023, Google estimates that 5-10% of traffic
+// has remained on HTTP, allowing attackers to eavesdrop
+// on or change that data [5].
 // [SETTING] to add site exceptions: Padlock>HTTPS-Only mode>On/Off/Off temporarily
 // [SETTING] Privacy & Security>HTTPS-Only Mode
 // [TEST] http://example.com [upgrade]
@@ -849,23 +700,17 @@ user_pref("network.IDN_show_punycode", true);
 // [3] https://web.dev/why-https-matters/
 // [4] https://www.cloudflare.com/learning/ssl/why-use-https/
 // [5] https://blog.chromium.org/2023/08/towards-https-by-default.html
-// [6] https://security.googleblog.com/2025/10/https-by-default.html

-// PREF: enable HTTPS-Only mode in all windows
-// When the top-level is HTTPS, insecure subresources are also upgraded (silent fail)
-// [SETTING] to add site exceptions: Padlock>HTTPS-Only mode>On (after "Continue to HTTP Site")
-// [SETTING] Privacy & Security>HTTPS-Only Mode (and manage exceptions)
-// [TEST] http://example.com [upgrade]
-// [TEST] http://httpforever.com/ | http://http.rip [no upgrade]
-user_pref("dom.security.https_only_mode", true); // [FF76+]
-    //user_pref("dom.security.https_only_mode_pbm", true); // [FF80+] Private Browsing windows only
+// PREF: enable HTTPS-only Mode
+//user_pref("dom.security.https_only_mode_pbm", true); // Private Browsing windows only
+//user_pref("dom.security.https_only_mode", true); // Normal + Private Browsing windows

 // PREF: offer suggestion for HTTPS site when available
 // [1] https://x.com/leli_gibts_scho/status/1371463866606059528
-user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
+//user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);

 // PREF: HTTP background requests in HTTPS-only Mode
-// When attempting to upgrade, if the server doesn't respond within a few seconds,
+// When attempting to upgrade, if the server doesn't respond within 3 seconds[=default time],
 // Firefox sends HTTP requests in order to check if the server supports HTTPS or not.
 // This is done to avoid waiting for a timeout which takes 90 seconds.
 // Firefox only sends top level domain when falling back to http.
@@ -874,6 +719,10 @@ user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1642387,1660945
 // [2] https://blog.mozilla.org/attack-and-defense/2021/03/10/insights-into-https-only-mode/
 //user_pref("dom.security.https_only_mode_send_http_background_request", true); // DEFAULT
+    //user_pref("dom.security.https_only_fire_http_request_background_timer_ms", 3000); // DEFAULT
+
+// PREF: disable HTTPS-Only mode for local resources
+//user_pref("dom.security.https_only_mode.upgrade_local", false); // DEFAULT

 /******************************************************************************
 * SECTION: DNS-over-HTTPS                                                    *
@@ -1070,17 +919,6 @@ user_pref("editor.truncate_user_pastes", false);
 // [DO NOT TOUCH] Icons will double-up if the website implements it natively.
 //user_pref("layout.forms.reveal-password-button.enabled", true); // always show icon in password fields

-// PREF: disable automatic authentication on Microsoft sites [WINDOWS]
-// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1695693,1719301
-//user_pref("network.http.windows-sso.enabled", false); // DEFAULT
-
-// PREF: disable passkeys
-//user_pref("security.webauth.webauthn", false);
-
-// PREF: enforce no direct attestation in passkeys [FF144+]
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1981587 ***/
-//user_pref("security.webauthn.always_allow_direct_attestation", false); // [DEFAULT: false]
-
 /****************************************************************************
 * SECTION: ADDRESS + CREDIT CARD MANAGER                                   *
 ****************************************************************************/
@@ -1092,6 +930,32 @@ user_pref("editor.truncate_user_pastes", false);
 //user_pref("extensions.formautofill.addresses.enabled", false);
 //user_pref("extensions.formautofill.creditCards.enabled", false);

+/******************************************************************************
+ * SECTION: MIXED CONTENT + CROSS-SITE                                       *
+******************************************************************************/
+
+// PREF: block insecure passive content (images) on HTTPS pages
+// [WARNING] This preference blocks all mixed content, including upgradable.
+// Firefox still attempts an HTTP connection if it can't find a secure one,
+// even with HTTPS First Policy. Although rare, this leaves a small risk of
+// a malicious image being served through a MITM attack.
+// Disable this pref if using HTTPS-Only Mode.
+// [NOTE] Enterprise users may need to enable this setting [1].
+// [1] https://blog.mozilla.org/security/2024/06/05/firefox-will-upgrade-more-mixed-content-in-version-127/
+user_pref("security.mixed_content.block_display_content", true);
+
+// PREF: allow PDFs to load javascript
+// https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/
+user_pref("pdfjs.enableScripting", false);
+
+// PREF: disable middle click on new tab button opening URLs or searches using clipboard [FF115+]
+// Enable if you're using LINUX.
+//user_pref("browser.tabs.searchclipboardfor.middleclick", false); // DEFAULT WINDOWS macOS
+
+// PREF: disable automatic authentication on Microsoft sites [WINDOWS]
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1695693,1719301
+//user_pref("network.http.windows-sso.enabled", false);
+
 /****************************************************************************
 * SECTION: EXTENSIONS                                                      *
 ****************************************************************************/
@@ -1266,61 +1130,6 @@ user_pref("privacy.userContext.ui.enabled", true);
    // Optionally, hide the setting which also disables the DRM prompt:
    //user_pref("browser.eme.ui.enabled", false);

-/******************************************************************************
- * SECTION: JIT & WASM                                                        *
-******************************************************************************/
-// PREF: Just-In-Time Compilation
-// Around half of zero-day exploits are directly related to "just in time"
-// (JIT) compilers, and disabling that can greatly improve your protection against
-// these potential exploits.
-// [1] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
-// [2] https://www.youtube.com/watch?v=i7qlZeDt9o4
-
-// PREF: Ion and Baseline JIT
-// [NOTE] When both Ion and JIT are disabled, and trustedprincipals
-// is enabled, then Ion can still be used by extensions [4].
-// Tor Browser doesn't even ship with these disabled by default.
-// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit
-// [2] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
-// [3] https://support.microsoft.com/en-us/microsoft-edge/enhance-your-security-on-the-web-with-microsoft-edge-b8199f13-b21b-4a08-a806-daed31a1929d
-// [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1599226
-// [5] https://wiki.mozilla.org/IonMonkey
-// [6] https://github.com/arkenfox/user.js/issues/1791#issuecomment-1891273681
-//user_pref("javascript.options.baselinejit", false); // DO NOT TOUCH
-//user_pref("javascript.options.ion", false);
-//user_pref("javascript.options.jit_trustedprincipals", true); // HIDDEN PREF
-
-// PREF: Blinterp (JIT-like)
-// You do not need to touch blinterp unless you want to go even slower
-// than the Baseline JIT (which I do not recommend).
-//user_pref("javascript.options.blinterp", false);
-
-// PREF: WebAssembly JIT [FF52+]
-// Vulnerabilities [1] have increasingly been found, including those known and fixed
-// in native programs years ago [2]. WASM has powerful low-level access, making
-// certain attacks (brute-force) and vulnerabilities more possible.
-// trustedprincipals: This controls whether WebAssembly is allowed in "privileged" contexts
-// (like your extensions or internal browser scripts).
-// [STATS] ~0.2% of websites, about half of which are for cryptomining / malvertising [2][3]
-// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm
-// [2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly
-// [3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes
-//user_pref("javascript.options.wasm", false);
-    //user_pref("javascript.options.wasm_trustedprincipals", false);
-    //user_pref("javascript.options.wasm_baselinejit", true); // DO NOT TOUCH
-    //user_pref("javascript.options.wasm_optimizingjit", false);
-
-// PREF: Asm.js JIT [FF22+]
-// Asm.js is essentially the "ancestor" of WebAssembly. It was a strict subset of JavaScript
-// designed to allow browsers to pre-compile code into highly efficient machine instructions.
-// However, WebAssembly was created specifically to replace Asm.js and has done so almost entirely.
-// Disabling Asm.js removes the "legacy" risk surface without affecting your ability to run modern WebAssembly sites.
-// [1] http://asmjs.org/
-// [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
-// [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/
-// [4] https://github.com/rh0dev/slides/blob/master/OffensiveCon2018_From_Assembly_to_JavaScript_and_back.pdf
-//user_pref("javascript.options.asmjs", false); // DEFAULT
-     
 /******************************************************************************
 * SECTION: VARIOUS                                                          *
 ******************************************************************************/
@@ -1334,28 +1143,40 @@ user_pref("privacy.userContext.ui.enabled", true);
 // If this is less than 5, then pasting code into the web console is disabled.
 //user_pref("devtools.selfxss.count", 5);

-// PREF: disable middle click on new tab button opening URLs or searches using clipboard [FF115+]
-// Enable if you're using LINUX.
-//user_pref("browser.tabs.searchclipboardfor.middleclick", false); // DEFAULT WINDOWS macOS
+// PREF: disable asm.js [FF22+]
+// [WARNING] Disabling this pref may disrupt your browsing experience.
+// [1] http://asmjs.org/
+// [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
+// [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/
+//user_pref("javascript.options.asmjs", false);

-// PREF: do not allow PDFs to load javascript
-// [1] https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/
+// PREF: disable Ion and baseline JIT to harden against JS exploits
+// [NOTE] When both Ion and JIT are disabled, and trustedprincipals
+// is enabled, then Ion can still be used by extensions [4].
+// [WARNING] Disabling these prefs will disrupt your browsing experience [6].
+// Tor Browser doesn't even ship with these disabled by default.
+// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit
+// [2] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
+// [3] https://support.microsoft.com/en-us/microsoft-edge/enhance-your-security-on-the-web-with-microsoft-edge-b8199f13-b21b-4a08-a806-daed31a1929d
+// [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1599226
+// [5] https://wiki.mozilla.org/IonMonkey
+// [6] https://github.com/arkenfox/user.js/issues/1791#issuecomment-1891273681
+//user_pref("javascript.options.ion", false);
+//user_pref("javascript.options.baselinejit", false);
+//user_pref("javascript.options.jit_trustedprincipals", true); // [FF75+] [HIDDEN PREF]

-// PREF: enforce PDFJS, disable PDFJS scripting
-// This setting controls if the option "Display in Firefox" is available in the setting below
-// and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With").
-// [WHY] pdfjs is lightweight, open source, and secure: the last exploit was June 2015 [1].
-// It doesn't break "state separation" of browser content (by not sharing with OS, independent apps).
-// It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk.
-// [NOTE] JS can still force a pdf to open in-browser by bundling its own code.
-// [SETUP-CHROME] You may prefer a different pdf reader for security/workflow reasons.
-// [SETTING] General>Applications>Portable Document Format (PDF)
-// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=pdf.js+firefox
-// [2] https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/
-//user_pref("pdfjs.disabled", false); // [DEFAULT: false]
-user_pref("pdfjs.enableScripting", false); // [FF86+]
+// PREF: disable WebAssembly [FF52+]
+// [WARNING] Disabling this pref may disrupt your browsing experience.
+// Vulnerabilities [1] have increasingly been found, including those known and fixed
+// in native programs years ago [2]. WASM has powerful low-level access, making
+// certain attacks (brute-force) and vulnerabilities more possible.
+// [STATS] ~0.2% of websites, about half of which are for cryptomining / malvertising [2][3]
+// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm
+// [2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly
+// [3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes
+//user_pref("javascript.options.wasm", false);

- /******************************************************************************
+/******************************************************************************
 * SECTION: SAFE BROWSING (SB)                                               *
 ******************************************************************************/

@@ -1370,11 +1191,6 @@ user_pref("pdfjs.enableScripting", false); // [FF86+]
 // [5] https://www.google.com/chrome/privacy/whitepaper.html#malware
 // [6] https://security.googleblog.com/2022/08/how-hash-based-safe-browsing-works-in.html

-// [FF147+] Firefox now supports the Safe Browsing V5 protocol and has migrated
-// from Safe Browsing V4 to the local list mode of Safe Browsing V5 protocol.
-// [1] https://developers.google.com/safe-browsing/reference
-// [2] https://developers.google.com/safe-browsing/reference/Local.List.Mode
-
 // PREF: Safe Browsing
 // [WARNING] Be sure to have alternate security measures if you disable SB! Adblockers do not count!
 // [SETTING] Privacy & Security>Security>... Block dangerous and deceptive content
@@ -1561,7 +1377,6 @@ user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);

 // PREF: disable Telemetry Coverage
 // [1] https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/
-// [2] https://github.com/yokoffing/Betterfox/issues/443
 user_pref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF]
 user_pref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF]
 user_pref("toolkit.coverage.endpoint.base", "");
@@ -1640,6 +1455,7 @@ user_pref("browser.tabs.crashReporting.sendReport", false);

 // PREF: assorted telemetry
 // [NOTE] Shouldn't be needed for user.js, but browser forks may want to disable these prefs.
+//user_pref("doh-rollout.disable-heuristics", true); // ensure DoH doesn't get enabled automatically
 //user_pref("dom.security.unexpected_system_load_telemetry_enabled", false);
 //user_pref("messaging-system.rsexperimentloader.enabled", false);
 //user_pref("network.trr.confirmation_telemetry_enabled", false);
@@ -3,7 +3,7 @@
 * Smoothfox                                                                            *
 * "Faber est suae quisque fortunae"                                                    *
 * priority: better scrolling                                                           *
- * version: 152                                                                         *
+ * version: 137                                                                       *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/

@@ -45,22 +45,6 @@ user_pref("general.smoothScroll", true); // DEFAULT
 user_pref("general.smoothScroll.msdPhysics.enabled", true);
 user_pref("mousewheel.default.delta_multiplier_y", 300); // 250-400; adjust this number to your liking

-/****************************************************************************************
- * OPTION: ZEN SMOOTH SCROLLING                                                         *
-****************************************************************************************/
-// recommended for 120hz+ displays
-user_pref("general.smoothScroll.msdPhysics.enabled", true);
-user_pref("general.smoothScroll.currentVelocityWeighting", "0.15");
-user_pref("general.smoothScroll.stopDecelerationWeighting", "0.6");
-user_pref("mousewheel.min_line_scroll_amount", 10);
-user_pref("general.smoothScroll.mouseWheel.durationMinMS", 80);
-user_pref("general.smoothScroll.msdPhysics.continuousMotionMaxDeltaMS", 12);
-user_pref("general.smoothScroll.msdPhysics.motionBeginSpringConstant", 600);
-user_pref("general.smoothScroll.msdPhysics.regularSpringConstant", 650);
-user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaMS", 25);
-user_pref("general.smoothScroll.msdPhysics.slowdownSpringConstant", 250);
-user_pref("mousewheel.default.delta_multiplier_y", 200);
-
 /****************************************************************************************
 * OPTION: NATURAL SMOOTH SCROLLING V3 [MODIFIED]                                      *
 ****************************************************************************************/
@@ -65,11 +65,6 @@ INSTALLATIONS_TO_CHECK = [
        "command": ["flatpak", "run", "org.mozilla.firefox"],
        "root": Path.home().joinpath(".var/app/org.mozilla.firefox/.mozilla/firefox").absolute(),
    },
-    # macOS
-    {
-        "command": ["/Applications/Firefox.app/Contents/MacOS/firefox"],
-        "root": Path.home().joinpath("Library/Application Support/Firefox").absolute(),
-    },
 ]


@@ -19,16 +19,24 @@

 /** FASTFOX ***/
 user_pref("browser.sessionstore.restore_pinned_tabs_on_demand", true);
-user_pref("browser.sessionstore.interval", 900000); // save session every 15 minutes
+
+// SPECULATIVE LOADING WITHOUT PREDICTOR
+user_pref("network.http.speculative-parallel-limit", 20);
+//user_pref("network.dns.disablePrefetch", false);
+//user_pref("network.dns.disablePrefetchFromHTTPS", false);
+//user_pref("dom.prefetch_dns_for_anchor_https_document", true); 
+user_pref("browser.urlbar.speculativeConnect.enabled", true);
+user_pref("browser.places.speculativeConnect.enabled", true);
+user_pref("network.prefetch-next", true);
+
+user_pref("network.http.max-persistent-connections-per-server", 20); // increase download connections

 /** SECUREFOX ***/
-user_pref("privacy.trackingprotection.allow_list.convenience.enabled", false); // disable Strict allowlist of convenience features
-user_pref("security.webauth.webauthn", false); // disable passkeys
 user_pref("signon.rememberSignons", false); // disable password manager
 user_pref("extensions.formautofill.addresses.enabled", false); // disable address manager
 user_pref("extensions.formautofill.creditCards.enabled", false); // disable credit card manager
-//user_pref("browser.urlbar.suggest.recentsearches", false);  // unselect "Show recent searches" for clean UI
-//user_pref("browser.urlbar.showSearchSuggestionsFirst", false); // unselect "Show search suggestions ahead of browsing history in address bar results" for clean UI
+user_pref("browser.urlbar.suggest.recentsearches", false);  // unselect "Show recent searches" for clean UI
+user_pref("browser.urlbar.showSearchSuggestionsFirst", false); // unselect "Show search suggestions ahead of browsing history in address bar results" for clean UI
 //user_pref("browser.urlbar.groupLabels.enabled", false); // hide Firefox Suggest label in URL dropdown box
 user_pref("signon.management.page.breach-alerts.enabled", false); // extra hardening
 user_pref("signon.autofillForms", false); // unselect "Autofill logins and passwords" for clean UI
@@ -43,18 +51,12 @@ user_pref("browser.search.update", false); // do not update opensearch engines
 user_pref("network.trr.confirmationNS", "skip"); // skip TRR confirmation request
 user_pref("extensions.webextensions.restrictedDomains", ""); // remove Mozilla domains so adblocker works on pages
 user_pref("identity.fxaccounts.enabled", false); // disable Firefox Sync
-user_pref("browser.profiles.enabled", false); // disable Firefox Sync and profiles
 user_pref("browser.firefox-view.feature-tour", "{\"screen\":\"\",\"complete\":true}"); // disable the Firefox View tour from popping up for new profiles
 user_pref("accessibility.force_disabled", 1); // disable Accessibility features
-user_pref("dom.security.https_only_mode", false); // disable HTTPS Only in normal windows
-user_pref("dom.security.https_only_mode_pbm", true); // HTTPS Only in PB windows
-user_pref("media.eme.enabled", false); // disable DRM
-user_pref("browser.eme.ui.enabled", false); // hide the UI setting; this also disables the DRM prompt
-//user_pref("dom.serviceWorkers.enabled", false); // disable service workers in Normal Browsing
-user_pref("dom.serviceWorkers.privateBrowsing.enabled", false); // disable service workers in Private Browsing
-user_pref("privacy.restrict3rdpartystorage.heuristic.navigation", false); // restrict dynamic storage access
-user_pref("privacy.restrict3rdpartystorage.heuristic.opened_window_after_interaction", false); // restrict dynamic storage access
 user_pref("security.cert_pinning.enforcement_level", 2); // strict public key pinning
+user_pref("captivedetect.canonicalURL", ""); // disable captive portal detection
+user_pref("network.captive-portal-service.enabled", false); // disable captive portal detection
+user_pref("network.connectivity-service.enabled", false); // disable captive portal detection

 /** PESKYFOX ***/
 user_pref("devtools.accessibility.enabled", false); // removes un-needed "Inspect Accessibility Properties" on right-click
@@ -68,11 +70,12 @@ user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket",
 //user_pref("browser.download.folderList", 0); // 0=desktop, 1=downloads, 2=last used
 user_pref("browser.toolbars.bookmarks.visibility", "never"); // always hide bookmark bar
 user_pref("browser.startup.homepage_override.mstone", "ignore"); // What's New page after updates; master switch
-//user_pref("browser.urlbar.suggest.history", false); // Browsing history; hide URL bar dropdown suggestions
-//user_pref("browser.urlbar.suggest.bookmark", false); // Bookmarks; hide URL bar dropdown suggestions
+user_pref("browser.urlbar.suggest.history", false); // Browsing history; hide URL bar dropdown suggestions
+user_pref("browser.urlbar.suggest.bookmark", false); // Bookmarks; hide URL bar dropdown suggestions
 user_pref("browser.urlbar.suggest.openpage", false); // Open tabs; hide URL bar dropdown suggestions
 user_pref("browser.urlbar.suggest.topsites", false); // Shortcuts; disable dropdown suggestions with empty query
 user_pref("browser.urlbar.suggest.engines", false); // Search engines; tab-to-search
+user_pref("browser.urlbar.quicksuggest.enabled", false); // hide Firefox Suggest UI in the settings
 //user_pref("browser.urlbar.maxRichResults", 1); // minimum suggestion needed for URL bar autofill
 user_pref("browser.bookmarks.max_backups", 0); // minimize disk use; manually back-up
 user_pref("view_source.wrap_long_lines", true);  // wrap source lines
@@ -90,62 +93,60 @@ user_pref("media.videocontrols.picture-in-picture.urlbar-button.enabled", false)
 user_pref("reader.parse-on-load.enabled", false); // disable reader mode
 //user_pref("reader.color_scheme", "auto"); // match system theme for when reader is enabled
 //user_pref("browser.urlbar.openintab", true); // stay on current site and open new tab when typing in URL bar
-user_pref("dom.disable_beforeunload", true); // disable beforeunload behavior on sites

 /** DELETE IF NOT NIGHTLY ***/
 user_pref("privacy.userContext.enabled", false); // disable Containers functionality
 user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // true by default on NIGHTLY
-user_pref("xpinstall.signatures.required", false); // [ESR/DEV/NIGHTLY]
+//user_pref("xpinstall.signatures.required", false); // [ESR/DEV/NIGHTLY]
+//user_pref("browser.urlbar.suggest.trending", false); // FF119+ disable showing trending searches; unselect for clean UI
+//user_pref("browser.urlbar.suggest.quickactions", false); // Quick actions; hide URL bar dropdown suggestions
+//user_pref("browser.urlbar.suggest.clipboard", false); // Clipboard; hide URL bar dropdown suggestions

-/** DELETE IF NOT WINDOWS ***/
+/** DELETE IF NOT WINDOWS DESKTOP ***/
 user_pref("network.trr.mode", 3); // enable TRR (without System fallback)
+//user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
 user_pref("default-browser-agent.enabled", false); // deny Mozilla monitoring default browser (breaks "Make Default" button)
 user_pref("geo.provider.ms-windows-location", false); // [WINDOWS]
-//user_pref("pdfjs.defaultZoomValue", "125"); // alt=page-width; PDF zoom level
+user_pref("pdfjs.defaultZoomValue", "125"); // alt=page-width; PDF zoom level
 user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
 user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
-user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
+user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", "");
+user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
+//user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
 //user_pref("font.name.serif.x-western", "Roboto Slab"); // serif font
 //user_pref("font.name.sans-serif.x-western", "Roboto"); // sans-serif font
 //user_pref("font.name.monospace.x-western", "Fira Code"); // monospace font
-user_pref("security.cert_pinning.enforcement_level", 2); // strict public key pinning
-user_pref("captivedetect.canonicalURL", ""); // disable captive portal detection
-user_pref("network.captive-portal-service.enabled", false); // disable captive portal detection
-user_pref("network.connectivity-service.enabled", false); // disable captive portal detection

 /** DELETE IF NOT ENTERPRISE WINDOWS LAPTOP ***/
-user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour; default=60
+user_pref("urlclassifier.trackingSkipURLs", ""); // do not allow embedded tweets, Instagram, Reddit, and Tiktok posts
+user_pref("urlclassifier.features.socialtracking.skipURLs", ""); // do not allow embedded tweets, Instagram, Reddit, and Tiktok posts
+user_pref("browser.search.suggest.enabled", true); // search suggestions
+user_pref("browser.urlbar.showSearchSuggestionsFirst", true); // Show search suggestions ahead of browsing history in address bar results
 //user_pref("network.connectivity-service.enabled", true); // public wifi
 //user_pref("network.trr.confirmationNS", "example.com"); // TRR confirmation request
 //user_pref("network.trr.mode", 2); // enable TRR (without System fallback)
+//user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
 user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
 user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
+user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", "");
+user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
 user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
 user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", false); // no need for userChrome
+//user_pref("browser.urlbar.suggest.history", true); // Browsing history
+//user_pref("browser.urlbar.suggest.bookmark", true); // Bookmarks
+//user_pref("browser.urlbar.suggest.openpage", true); // Open tabs
+//user_pref("browser.urlbar.suggest.topsites", true); // Shortcuts

-/** DELETE IF NOT macOS ***/
+/** DELETE IF NOT macOS LAPTOP ***/
 user_pref("network.trr.mode", 2); // enable TRR (with System fallback)
 user_pref("network.trr.max-fails", 5); // lower max attempts to use DoH
 user_pref("geo.provider.use_corelocation", false); // geolocation [MAC]
 user_pref("pdfjs.defaultZoomValue", "page-width"); // PDF zoom level
 user_pref("app.update.auto", false); // disable auto-installing Firefox updates [NON-WINDOWS]
 //user_pref("font.name.monospace.x-western", "SF Mono"); // monospace font
-user_pref("security.cert_pinning.enforcement_level", 2); // strict public key pinning
-user_pref("captivedetect.canonicalURL", ""); // disable captive portal detection
-user_pref("network.captive-portal-service.enabled", false); // disable captive portal detection
-user_pref("network.connectivity-service.enabled", false); // disable captive portal detection

-/** DELETE IF NOT LINUX ***/
+/** DELETE IF NOT LINUX LAPTOP ***/
 user_pref("network.trr.mode", 2); // enable TRR (with System fallback)
 user_pref("network.trr.max-fails", 5); // lower max attempts to use DoH
 user_pref("geo.provider.use_geoclue", false); // [LINUX]
 user_pref("pdfjs.defaultZoomValue", "page-width"); // PDF zoom level
-user_pref("app.update.auto", false); // disable auto-installing Firefox updates [NON-WINDOWS]
-
-/** DELETE IF NOT WATERFOX ***/
-// PREF: improve font rendering by using DirectWrite everywhere like Chrome [WINDOWS]
-user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
-user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
-user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
-user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
-user_pref("privacy.userContext.enabled", false); // disable Container Tabs
@@ -6,6 +6,7 @@
        "DisableFirefoxStudies": true,
        "DisableTelemetry": true,
        "DisableFeedbackCommands": true,
+        "DisablePocket": true,
        "DisableSetDesktopBackground": true,
        "DisableDeveloperTools": false,
        "DontCheckDefaultBrowser": true,
@@ -14,15 +15,6 @@
            "ProviderURL": "",
            "Locked": false
        },
-
-        "FirefoxHome": {
-          "SponsoredStories": false,
-          "SponsoredTopSites": false,
-          "Stories": false
-        },
-        "GenerativeAI": {
-          "Enabled": false
-        },
        "ManualAppUpdateOnly": false,
        "ManualAppUpdateOnly_comment": "Change to true to disable auto-updates.",
        "NoDefaultBookmarks": true,
@@ -44,8 +36,7 @@
            "PreventInstalls": false,
            "Remove": [
                "Amazon.com",
-                "eBay",
-                "Perplexity"
+                "eBay"
            ],
            "Default": "DuckDuckGo",
            "Add": [
@@ -10,37 +10,20 @@
 /****************************************************************************
 * Betterfox                                                                *
 * "Ad meliora"                                                             *
- * version: 152                                                             *
+ * version: 140.8 ESR                                                       *
 * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/

 /****************************************************************************
- * SECTION: SECUREFOX                                                       *
+ * SECTION: FASTFOX                                                         *
 ****************************************************************************/
-/** TRACKING PROTECTION ***/
-user_pref("browser.contentblocking.category", "strict");
-user_pref("browser.download.start_downloads_in_tmp_dir", true);
-user_pref("browser.uitour.enabled", false);
-user_pref("privacy.globalprivacycontrol.enabled", true);
-
-/** OCSP & CERTS / HPKP ***/
-user_pref("security.OCSP.enabled", 0);
-user_pref("privacy.antitracking.isolateContentScriptResources", true);
-user_pref("security.csp.reporting.enabled", false);
-
-/** SSL / TLS ***/
-user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
-user_pref("browser.xul.error_pages.expert_bad_cert", true);
-user_pref("security.tls.enable_0rtt_data", false);
-
-/** DISK AVOIDANCE ***/
+/** DISK CACHE ***/
 user_pref("browser.cache.disk.enable", false);
-user_pref("browser.privatebrowsing.forceMediaMemoryCache", true);
-user_pref("media.memory_cache_max_size", 65536);
-user_pref("browser.sessionstore.interval", 60000);

-/** SHUTDOWN & SANITIZING ***/
-user_pref("privacy.history.custom", true);
+/** MEDIA CACHE ***/
+user_pref("media.memory_cache_max_size", 65536);
+user_pref("media.cache_readahead_limit", 7200);
+user_pref("media.cache_resume_threshold", 3600);

 /** SPECULATIVE LOADING ***/
 user_pref("network.http.speculative-parallel-limit", 0);
@@ -49,6 +32,35 @@ user_pref("network.dns.disablePrefetchFromHTTPS", true);
 user_pref("browser.urlbar.speculativeConnect.enabled", false);
 user_pref("browser.places.speculativeConnect.enabled", false);
 user_pref("network.prefetch-next", false);
+user_pref("network.predictor.enabled", false);
+
+/****************************************************************************
+ * SECTION: SECUREFOX                                                       *
+****************************************************************************/
+/** TRACKING PROTECTION ***/
+user_pref("browser.contentblocking.category", "strict");
+user_pref("browser.download.start_downloads_in_tmp_dir", true);
+user_pref("browser.helperApps.deleteTempFileOnExit", true);
+user_pref("browser.uitour.enabled", false);
+user_pref("privacy.globalprivacycontrol.enabled", true);
+
+/** OCSP & CERTS / HPKP ***/
+user_pref("security.OCSP.enabled", 0);
+user_pref("security.pki.crlite_mode", 2);
+user_pref("security.csp.reporting.enabled", false);
+
+/** SSL / TLS ***/
+user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
+user_pref("browser.xul.error_pages.expert_bad_cert", true);
+user_pref("security.tls.enable_0rtt_data", false);
+
+/** DISK AVOIDANCE ***/
+user_pref("browser.privatebrowsing.forceMediaMemoryCache", true);
+user_pref("browser.sessionstore.interval", 60000);
+
+/** SHUTDOWN & SANITIZING ***/
+user_pref("browser.privatebrowsing.resetPBM.enabled", true);
+user_pref("privacy.history.custom", true);

 /** SEARCH / URL BAR ***/
 user_pref("browser.urlbar.trimHttps", true);
@@ -60,16 +72,16 @@ user_pref("browser.urlbar.groupLabels.enabled", false);
 user_pref("browser.formfill.enable", false);
 user_pref("network.IDN_show_punycode", true);

-/** HTTPS-ONLY MODE ***/
-user_pref("dom.security.https_only_mode", true);
-user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
-
 /** PASSWORDS ***/
 user_pref("signon.formlessCapture.enabled", false);
 user_pref("signon.privateBrowsingCapture.enabled", false);
 user_pref("network.auth.subresource-http-auth-allow", 1);
 user_pref("editor.truncate_user_pastes", false);

+/** MIXED CONTENT + CROSS-SITE ***/
+user_pref("security.mixed_content.block_display_content", true);
+user_pref("pdfjs.enableScripting", false);
+
 /** EXTENSIONS ***/
 user_pref("extensions.enabledScopes", 5);

@@ -79,9 +91,6 @@ user_pref("network.http.referer.XOriginTrimmingPolicy", 2);
 /** CONTAINERS ***/
 user_pref("privacy.userContext.ui.enabled", true);

-/** VARIOUS ***/
-user_pref("pdfjs.enableScripting", false);
-
 /** SAFE BROWSING ***/
 user_pref("browser.safebrowsing.downloads.remote.enabled", false);

@@ -125,6 +134,7 @@ user_pref("browser.tabs.crashReporting.sendReport", false);
 * SECTION: PESKYFOX                                                        *
 ****************************************************************************/
 /** MOZILLA UI ***/
+user_pref("browser.privatebrowsing.vpnpromourl", "");
 user_pref("extensions.getAddons.showPane", false);
 user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
 user_pref("browser.discovery.enabled", false);
@@ -143,12 +153,8 @@ user_pref("browser.compactmode.show", true);
 user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS

 /** AI ***/
-user_pref("browser.ai.control.default", "blocked");
 user_pref("browser.ml.enable", false);
 user_pref("browser.ml.chat.enabled", false);
-user_pref("browser.ml.chat.menu", false);
-user_pref("browser.tabs.groups.smart.enabled", false);
-user_pref("browser.ml.linkPreview.enabled", false);

 /** FULLSCREEN NOTICE ***/
 user_pref("full-screen-api.transition-duration.enter", "0 0");
@@ -165,6 +171,9 @@ user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
 user_pref("browser.newtabpage.activity-stream.showSponsored", false);
 user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);

+/** POCKET ***/
+user_pref("extensions.pocket.enabled", false);
+
 /** DOWNLOADS ***/
 user_pref("browser.download.manager.addToRecentDocs", false);

@@ -173,14 +182,9 @@ user_pref("browser.download.open_pdf_attachments_inline", true);

 /** TAB BEHAVIOR ***/
 user_pref("browser.bookmarks.openInTabClosesMenu", false);
+user_pref("browser.menu.showViewImageInfo", true);
 user_pref("findbar.highlightAll", true);
-
-/****************************************************************************
- * SECTION: SMOOTHFOX                                                       *
-****************************************************************************/
-// visit https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
-// Enter your scrolling overrides below this line:
-
+user_pref("layout.word_select.eat_space_to_next_word", false);

 /****************************************************************************
 * START: MY OVERRIDES                                                      *
@@ -190,6 +194,16 @@ user_pref("findbar.highlightAll", true);
 // Enter your personal overrides below this line:


+
+/****************************************************************************
+ * SECTION: SMOOTHFOX                                                       *
+****************************************************************************/
+// visit https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
+// Enter your scrolling overrides below this line:
+
+
+
 /****************************************************************************
 * END: BETTERFOX                                                           *
 ****************************************************************************/
+
@@ -1,8 +0,0 @@
-### Betterfox Aqua
-#### A user.js for Waterfox
-Just FYI: There are some long-term issues with Waterfox where the browser doesn't load certain internal settings or resets prefs after restart. For examples, see https://github.com/BrowserWorks/waterfox/issues/3196 and https://github.com/BrowserWorks/waterfox/issues/3947.
-
-> [!IMPORTANT]
-> Fork-specific files are side projects and will not update every release. When in doubt, use the standard Firefox user.js.
->
-> This is also a reminder that Waterfox is based on the [Firefox ESR](https://support.mozilla.org/kb/firefox-esr-release-cycle) release cycle.
@@ -1,122 +0,0 @@
-//
-/* You may copy+paste this file and use it as it is.
- *
- * If you make changes to your about:config while the program is running, the
- * changes will be overwritten by the user.js when the application restarts.
- *
- * To make lasting changes to preferences, you will have to edit the user.js.
- */
-
-/****************************************************************************
- * Betterfox Aqua                                                           *
- * "Ex nihilo nihil fit"                                                    *
- * version: 140.12                                                          *
- * url: https://github.com/yokoffing/Betterfox                              *
-****************************************************************************/
-
-/****************************************************************************
- * SECTION: SECUREFOX                                                       *
-****************************************************************************/
-/** TRACKING PROTECTION ***/
-user_pref("browser.contentblocking.category", "strict");
-user_pref("browser.download.start_downloads_in_tmp_dir", true);
-
-/** OCSP & CERTS / HPKP ***/
-user_pref("privacy.antitracking.isolateContentScriptResources", true); // needed for next ESR if not a default pref
-user_pref("security.csp.reporting.enabled", false);
-
-/** DISK AVOIDANCE ***/
-user_pref("browser.cache.disk.enable", false);
-//user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // default
-user_pref("media.memory_cache_max_size", 65536);
-user_pref("browser.sessionstore.interval", 60000);
-
-/** SHUTDOWN & SANITIZING ***/
-user_pref("privacy.history.custom", true);
-user_pref("browser.privatebrowsing.resetPBM.enabled", true);
-
-/** SPECULATIVE LOADING ***/
-user_pref("network.http.speculative-parallel-limit", 0);
-//user_pref("network.dns.disablePrefetch", true);
-//user_pref("network.dns.disablePrefetchFromHTTPS", true);
-user_pref("browser.urlbar.speculativeConnect.enabled", false);
-user_pref("browser.places.speculativeConnect.enabled", false);
-user_pref("network.prefetch-next", false);
-
-/** SEARCH / URL BAR ***/
-//user_pref("browser.urlbar.trimURLs", true); // FF default
-//user_pref("browser.urlbar.trimHttps", true); // optional
-//user_pref("browser.urlbar.untrimOnUserInteraction.featureGate", true); // optional
-user_pref("browser.search.suggest.enabled", false);
-//user_pref("browser.urlbar.quicksuggest.enabled", false);
-user_pref("browser.urlbar.groupLabels.enabled", false);
-user_pref("browser.formfill.enable", false);
-user_pref("network.IDN_show_punycode", true);
-
-/** HTTPS-ONLY MODE ***/
-user_pref("dom.security.https_only_mode", true);
-user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
-
-/** PASSWORDS ***/
-user_pref("signon.formlessCapture.enabled", false);
-user_pref("signon.privateBrowsingCapture.enabled", false);
-
-/** EXTENSIONS ***/
-user_pref("extensions.enabledScopes", 5);
-
-/** MOZILLA ***/
-user_pref("permissions.default.desktop-notification", 2);
-//user_pref("permissions.default.geo", 2); // optional
-//user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate"); // blank
-user_pref("browser.search.update", false);
-user_pref("permissions.manager.defaultsUrl", "");
-user_pref("extensions.getAddons.cache.enabled", false);
-
-/****************************************************************************
- * SECTION: PESKYFOX                                                        *
-****************************************************************************/
-/** MOZILLA UI ***/
-user_pref("browser.shell.checkDefaultBrowser", false);
-user_pref("browser.startup.homepage_override.mstone", "ignore");
-user_pref("browser.aboutwelcome.enabled", false);
-
-/** THEME ADJUSTMENTS ***/
-user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS
-
-/** FULLSCREEN NOTICE ***/
-user_pref("full-screen-api.transition-duration.enter", "0 0");
-user_pref("full-screen-api.transition-duration.leave", "0 0");
-user_pref("full-screen-api.warning.timeout", 0);
-
-/** NEW TAB PAGE ***/
-user_pref("browser.newtabpage.activity-stream.default.sites", "");
-user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
-user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
-user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);
-
-/** TAB BEHAVIOR ***/
-//user_pref("browser.link.open_newwindow.restriction", 2); // restore FF default
-
-/****************************************************************************
- * SECTION: SMOOTHFOX                                                       *
-****************************************************************************/
-// visit https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
-// Enter your scrolling overrides below this line:
-
-/****************************************************************************
- * START: MY OVERRIDES                                                      *
-****************************************************************************/
-// visit https://github.com/yokoffing/Betterfox/wiki/Common-Overrides
-// visit https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening
-// Enter your personal overrides below this line:
-
-/** WATERFOX-SPECIFIC ***/
-user_pref("cookiebanners.service.mode", 0); // project depreciated
-user_pref("cookiebanners.service.mode.privateBrowsing", 0); // project depreciated
-
-//user_pref("waterfox.blocker.ui.enabled", true); // new adblocker option
-//user_pref("waterfox.blocker.enabled", true);
-
-/****************************************************************************
- * END: BETTERFOX                                                           *
-****************************************************************************/
@@ -10,60 +10,51 @@
 /****************************************************************************
 * BetterZen                                                                *
 * "Ex nihilo nihil fit"                                                    *
- * version: 148                                                             *
+ * version: 142                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/

+/****************************************************************************
+ * SECTION: FASTFOX                                                         *
+****************************************************************************/
+/** GFX ***/
+user_pref("gfx.canvas.accelerated.cache-size", 512);
+
+/** DISK CACHE ***/
+user_pref("browser.cache.disk.enable", false);
+
+/** NETWORK ***/
+user_pref("network.http.pacing.requests.enabled", false);
+
+/** SPECULATIVE LOADING ***/
+user_pref("network.dns.disablePrefetch", true);
+user_pref("network.dns.disablePrefetchFromHTTPS", true);
+user_pref("network.prefetch-next", false);
+user_pref("network.predictor.enabled", false);
+user_pref("network.predictor.enable-prefetch", false);
+
 /****************************************************************************
 * SECTION: SECUREFOX                                                       *
 ****************************************************************************/
 /** TRACKING PROTECTION ***/
 user_pref("browser.contentblocking.category", "strict");
+user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true);
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true);
 user_pref("browser.download.start_downloads_in_tmp_dir", true);
-user_pref("browser.uitour.enabled", false);
-user_pref("privacy.globalprivacycontrol.enabled", true);

 /** OCSP & CERTS / HPKP ***/
 user_pref("security.OCSP.enabled", 0);
-user_pref("privacy.antitracking.isolateContentScriptResources", true);
-user_pref("security.csp.reporting.enabled", false);
-
-/** SSL / TLS ***/
-user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
-user_pref("browser.xul.error_pages.expert_bad_cert", true);
-user_pref("security.tls.enable_0rtt_data", false);
+user_pref("security.pki.crlite_mode", 2);

 /** DISK AVOIDANCE ***/
-user_pref("browser.cache.disk.enable", false);
-user_pref("browser.privatebrowsing.forceMediaMemoryCache", true);
-user_pref("media.memory_cache_max_size", 65536);
 user_pref("browser.sessionstore.interval", 60000);

 /** SHUTDOWN & SANITIZING ***/
-user_pref("privacy.history.custom", true);
 user_pref("browser.privatebrowsing.resetPBM.enabled", true);
-
-/** SPECULATIVE LOADING ***/
-user_pref("network.http.speculative-parallel-limit", 0);
-user_pref("network.dns.disablePrefetch", true);
-user_pref("network.dns.disablePrefetchFromHTTPS", true);
-user_pref("browser.urlbar.speculativeConnect.enabled", false);
-user_pref("browser.places.speculativeConnect.enabled", false);
-user_pref("network.prefetch-next", false);
+user_pref("privacy.history.custom", true);

 /** SEARCH / URL BAR ***/
-user_pref("browser.urlbar.trimHttps", true);
-user_pref("browser.urlbar.untrimOnUserInteraction.featureGate", true);
-user_pref("browser.search.separatePrivateDefault.ui.enabled", true);
-user_pref("browser.search.suggest.enabled", false);
 user_pref("browser.urlbar.quicksuggest.enabled", false);
-user_pref("browser.urlbar.groupLabels.enabled", false);
-user_pref("browser.formfill.enable", false);
-user_pref("network.IDN_show_punycode", true);
-
-/** HTTPS-ONLY MODE ***/
-user_pref("dom.security.https_only_mode", true);
-user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);

 /** PASSWORDS ***/
 user_pref("signon.formlessCapture.enabled", false);
@@ -71,18 +62,9 @@ user_pref("signon.privateBrowsingCapture.enabled", false);
 user_pref("network.auth.subresource-http-auth-allow", 1);
 user_pref("editor.truncate_user_pastes", false);

-/** EXTENSIONS ***/
-user_pref("extensions.enabledScopes", 5);
-
 /** HEADERS / REFERERS ***/
 user_pref("network.http.referer.XOriginTrimmingPolicy", 2);

-/** CONTAINERS ***/
-user_pref("privacy.userContext.ui.enabled", true);
-
-/** VARIOUS ***/
-user_pref("pdfjs.enableScripting", false);
-
 /** SAFE BROWSING ***/
 user_pref("browser.safebrowsing.downloads.remote.enabled", false);

@@ -92,90 +74,18 @@ user_pref("permissions.default.geo", 2);
 user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate");
 user_pref("browser.search.update", false);
 user_pref("permissions.manager.defaultsUrl", "");
-user_pref("extensions.getAddons.cache.enabled", false);
-
-/** TELEMETRY ***/
-user_pref("datareporting.policy.dataSubmissionEnabled", false);
-user_pref("datareporting.healthreport.uploadEnabled", false);
-user_pref("toolkit.telemetry.unified", false);
-user_pref("toolkit.telemetry.enabled", false);
-user_pref("toolkit.telemetry.server", "data:,");
-user_pref("toolkit.telemetry.archive.enabled", false);
-user_pref("toolkit.telemetry.newProfilePing.enabled", false);
-user_pref("toolkit.telemetry.shutdownPingSender.enabled", false);
-user_pref("toolkit.telemetry.updatePing.enabled", false);
-user_pref("toolkit.telemetry.bhrPing.enabled", false);
-user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);
-user_pref("toolkit.telemetry.coverage.opt-out", true);
-user_pref("toolkit.coverage.opt-out", true);
-user_pref("toolkit.coverage.endpoint.base", "");
-user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
-user_pref("browser.newtabpage.activity-stream.telemetry", false);
-user_pref("datareporting.usage.uploadEnabled", false);
-
-/** EXPERIMENTS ***/
-user_pref("app.shield.optoutstudies.enabled", false);
-user_pref("app.normandy.enabled", false);
-user_pref("app.normandy.api_url", "");
-
-/** CRASH REPORTS ***/
-user_pref("breakpad.reportURL", "");
-user_pref("browser.tabs.crashReporting.sendReport", false);

 /****************************************************************************
 * SECTION: PESKYFOX                                                        *
 ****************************************************************************/
 /** MOZILLA UI ***/
-user_pref("extensions.getAddons.showPane", false);
-user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
-user_pref("browser.discovery.enabled", false);
 user_pref("browser.shell.checkDefaultBrowser", false);
-user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false);
-user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
-user_pref("browser.preferences.moreFromMozilla", false);
-user_pref("browser.aboutConfig.showWarning", false);
-user_pref("browser.startup.homepage_override.mstone", "ignore");
-user_pref("browser.aboutwelcome.enabled", false);
-user_pref("browser.profiles.enabled", true);
-
-/** THEME ADJUSTMENTS ***/
-user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
-user_pref("browser.compactmode.show", true);
-user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS
-
-/** AI ***/
-user_pref("browser.ml.enable", false);
-user_pref("browser.ml.chat.enabled", false);
-user_pref("browser.ml.chat.menu", false);
-user_pref("browser.tabs.groups.smart.enabled", false);
-user_pref("browser.ml.linkPreview.enabled", false);
-
-/** FULLSCREEN NOTICE ***/
-user_pref("full-screen-api.transition-duration.enter", "0 0");
-user_pref("full-screen-api.transition-duration.leave", "0 0");
-user_pref("full-screen-api.warning.timeout", 0);
-
-/** URL BAR ***/
-user_pref("browser.urlbar.trending.featureGate", false);

 /** NEW TAB PAGE ***/
 user_pref("browser.newtabpage.activity-stream.default.sites", "");
-user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
-user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
-user_pref("browser.newtabpage.activity-stream.showSponsored", false);
-user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);

-/** DOWNLOADS ***/
-user_pref("browser.download.manager.addToRecentDocs", false);
-
-/** PDF ***/
-user_pref("browser.download.open_pdf_attachments_inline", true);
-
-/** TAB BEHAVIOR ***/
-user_pref("browser.bookmarks.openInTabClosesMenu", false);
-user_pref("browser.menu.showViewImageInfo", true);
-user_pref("findbar.highlightAll", true);
-user_pref("layout.word_select.eat_space_to_next_word", false);
+/** URL BAR ***/
+user_pref("dom.text_fragments.create_text_fragment.enabled", true);

 /****************************************************************************
 * START: ZEN-SPECIFIC OVERRIDES                                            *
Author	SHA1	Message	Date
yokoffing	866906358d	remove some fastfox prefs	2026-02-28 16:59:58 -05:00
yokoffing	76dac5f452	add missing pref browser.startup.homepage_override.mstone	2025-12-18 15:32:08 -05:00
yokoffing	dae3e38e86	Update README.md	2025-09-18 11:13:03 -04:00
yokoffing	c032d750f1	ver #	2025-09-18 11:07:03 -04:00
yokoffing	7c27cd7d23	Update user.js	2025-09-18 11:06:44 -04:00